Here's an explanation of [Evolve], introduced as a new game mechanic in the Booster Pack “-WISH FOR SHENRON- [FB07]”!
[Evolve]
Cards with the [Evolve] skill can be played from your hand on top of specific Battle Cards when certain conditions are met.

[Evolve] Mechanics Explained
- At the same timing as [Activate Main], reveal a card with [Evolve] from your hand, choose 1 Battle Card in your Battle Area that meets its conditions, then pay the stated skill cost to activate [Evolve].
- You then play the card with [Evolve] on top of the chosen card without having to pay its normal cost.

Effects such as “it can’t attack for the turn” are not carried over.
When a card with [Evolve] moves from the Battle Area to another area, all cards underneath it will be placed in the Drop Area.
Please refer to the FAQ section for rules regarding [Evolve].