Curse Field (S-CBT01/0063EN) (S-CBT01)

[Set] (This card remains on the field.)
When a card is put underneath your opponent's flag by your card effects, put the top card of your deck into your gauge, and draw a card. This ability only activates once per turn.
At the start of each player's attack phase, you may call a size 1 "Curse Dragon" from your drop zone by paying its [Call Cost].
You may only [Set] one "Curse Field" on your field.