The Clone card is unlocked from the Electro Valley (Arena 11). It is a spell that clones, or duplicates, all troops within its area of effect. However, cloned units and any shields only have 1 hitpoint. A Clone card costs 3 Elixir to cast. The Clone will push the original unit forwards while the new cloned unit is spawned behind.
- Unlike the Mirror, Clone duplicates every troop that enters its area of effect.
- A Clone spell can create fragile but strong copies of multiple troops in a medium-sized radius at once for a low cost of 3 Elixir.
- Mass unit spawning cards may spread out of the Clone's relatively small radius, resulting in the card not being fully cloned.
- Since cloned troops have only 1 hitpoint, a Zap, The Log, Arrows, or a Tornado can easily deal with them. This can create an Elixir advantage, depending on the number of clones.
- It is a good idea to clone a large push as the clones do the same damage as the original. Cloned units also retain any unique effects of their originals.
- Shields, such as the Dark Prince's, can be cloned, allowing them to survive two hits rather than one. Both shield and troop itself will have one hitpoint each.
- Clones of any troops that spawn sub-troops will also spawn cloned sub-troops. For example, a cloned Lava Hound will spawn six cloned Lava Pups when it is destroyed.
- Clones of any troops that deal Death Damage will also deal Death Damage. For example, a cloned Giant Skeleton will also deal its death damage.
- Clones of troops that deal charge damage like Prince or Dark Prince will also deal double damage when charged.
- Clones of troops that dash/jump/grab like the Bandit, Mega Knight or Fisherman will also dash/jump/grab.
- A cloned Lumberjack will also drop a Rage. With accurate timing, it is also possible to only clone the Rage by placing the Clone right when the Rage bottle drops.
- A cloned Witch and Night Witch will still be able to summon Skeletons and Bats respectively.
- A cloned Cannon Cart will drop its Cannon when it is hit, creating a cloned Cannon that behaves like a building with a 30 second lifetime (it will still have 1 hitpoint, just like any other clone).
- Cloned Blobs from an Elixir Golem will still give the opponent 1 Elixir when destroyed.
- One property that clones do not have is the ability to deal spawn damage. For instance, a cloned Electro Wizard will not deal its spawn damage upon duplication.
- It is beneficial to clone low hitpoint units since the drawback of the clones only having a single hitpoint is usually negligible (e.g, a cloned Skeleton Army will still be one-shot by a Zap spell). Additionally, many low hitpoint units come in larger numbers, exponentially increasing the value of the spell's effect. As such, the Skeleton Army can be effective to clone to potentially deal heavy damage, unless the opponent has a spell that will eradicate the Skeletons.
- Clone pairs well with the Mirror, as the Mirror duplicates troops and the Clone then clones them, multiplying their numbers exponentially. However, this is a fairly costly and therefore risky move as cloning and mirroring most singular units will not substantially mitigate their weaknesses (i.e, the combined units wouldn't be able to break through most things they couldn't break through before). Keep in mind that mirroring first and then cloning is usually more expensive and 1 out of 2 troops will have the full hitpoints while cloning then mirroring is often cheaper but only 1 of the 3 troops will have full hitpoints.
- It is a good idea to clone troops attacking the enemy Crown Tower(s) if the Tower has locked onto a high hitpoint unit or a tank.
- The Clone spell can create devastating split pushes by cloning a set of Three Musketeers so that 2 are on 1 side and 4 are on the other.
- Cloning a Giant Skeleton on a Tower is devastating, but costs a heavy 9 Elixir.
- It is not recommended to clone a melee troop to fight against a ranged troop if the main troop is about to be defeated. However, a ranged troop can be cloned with less risk against a melee troop because it can offer damage to the enemy before being defeated.
- Cloning a troop that has been frozen or slowed will produce a clone that is not frozen. This allows the user to partially negate a defensive Freeze, as the clone will do damage in place of the original while the original remains frozen, while the Crown Tower would have most likely locked onto the real unit.
- Cloning the Lava Hound is a very effective strategy. If the cloned copy is defeated, the Lava Pups will spring out and whether the Crown Tower was originally targeting the real copy or not, the Tower will instantly transfer its target to the real copy (assuming it was still alive) and the Lava Pups will do heavy damage to the Tower. However, this can be easily countered with Zap or Arrows.
- It is advisable not to clone the Elixir Golem because the clone will be very easy to take down, therefore giving the opponent an easy 4 Elixir, on top of the 4 obtained through the real Elixir Golem.
- Poison, Tornado and Arrows are extremely effective counters to any clone, as they hit multiple times in their respective areas of effect, effectively eliminating the threat caused by clones of Lava Hounds or shielded troops such as Guards.
- Earthquake can also be used effectively on clones but unlike the other spells listed, it cannot attack air troops.
- Clone was added to the game on 9/12/16.
- On 13/3/17, the March 2017 Update stopped the Clone from resetting charge attacks of cloned troops. While it will no longer reset charge attacks of the original troops, the clones spawn without being charged, retaining its behavior prior to this change.
- On 12/6/17, a Balance Update made the Cloning effect faster.
- On 20/6/18, a Balance Update increased the Clone's radius to 4 (from 3). It also moved the Arena to unlock this card from Frozen Peak (Arena 8) to Electro Valley (Arena 11).
- On 28/1/19, the January Update made the cloned troops spawn behind the original troops instead of to the right.
- On 15/4/19, an update reduced the Clone's radius to 3 (from 4).
- On 31/8/20, the Clan Wars II Update made it so that cloned units can no longer be healed.
- The container of this spell looks like that of a Dark Spell from Clash of Clans, though the Clone Spell is an Elixir spell in Clash of Clans.
- Cloning bypasses unit deploy times. For example, if a Golem is cloned during its relatively long deploy time, the cloned Golem will start walking without the deploy time finishing.
- Clone cannot duplicate previously produced clones.
- Unlike its Clash of Clans counterpart, the Clone only produces one clone of a troop regardless of its size; in Clash of Clans, a single troop may produce multiple clones.
- This is because of the differing mechanics of the Clone in both games. The Clone Spell in Clash of Clans bases its mechanics off of housing space of individual troops, with higher-level Clone Spells being able to clone more troops.
- The Clash of Clans Clone spell can only spawn troops that have a limited lifespan while the Clash Royale version spawns permanent but very low health clones.
- The upgrades work like that of a Mirror. When leveling up the Clone, the cloned cards' level will be increased. Unlike the Mirror, max-leveled Clone will not clone at max +1 level.
- Clone is one of the five Elixir spells from Clash of Clans to also be in Clash Royale, the others being the Lightning, Rage, Freeze, and Earthquake.
- It is the only spell that doesn’t affect buildings. Tornado (before the Season 11 update) and Heal (before its removal) used to be included here.
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