Double Check Tactics (S-CBT02/0036EN) (S-CBT02)

[Set] (This card remains on the field.)
When a "Drametal" monster enters your field, you may return a monster on your opponent’s field to hand. If you do, put the top card of your deck into your gauge, and you gain 1 life!
At the end of each player's turn, deal damage to your opponent equal to the number of your oppressed areas!
You may only [Set] one "Double Check Tactics" on your field.