Board Thread:Update Suggestions/@comment-29279962-20161013071713/@comment-25856498-20161025070902

Power Spell - A spell that temporarily increases the level of all friendly units inside it. This includes buildings and your own towers.

When the Power Spell is placed, each affected unit's new hitpoints depend on the current percentage of hitpoints it has. For example, a level 1 Miner with 800 hitpoints left (80% of level 1) will now have 880 hitpoints (80% of level 2) if it levels up to level 2 from the effects of the Power Spell. Likewise, when a unit reverts to its original level after the Power Spell expires or it leaves the Power Spell's area of effect, it will also lose some hitpoints in a similar fashion.

Any changes to a unit's damage happen instantanously.

The Power Spell can also be used to power up spells, with the exception of the Mirror. The power up will give it increased level if the center of the affected spell is within the radius of the Power Spell. Otherwise, the Power Spell will have no effect. If a spell whose duration is affected by level is powered up, the duration will be extended based on percentage of its duration that has already elapsed. For example, if a level 1 Rage which has already run for 3 seconds (50% of its duration) gets powered up to level 3, the remaining duration will be extended to 50% of the level 3 Rage, or 3.5 seconds. This also applies to the Lumberjack's Rage.

The Power Spell can also increase death damage if used to power up said death damage mechanism. For example, if a level 1 Giant Skeleton is killed and drops its giant bomb, then a Power Spell is used on the giant bomb, the giant bomb will explode with the force of a leveled up Giant Skeleton's giant bomb.

However, the Power Spell cannot increase the level of a unit past a certain cap. This cap increases as you level it up. At max level, it is capable of powering up cards 2 levels above max!