[Assist] Toko, Level 2 [Ranbu]

[Enter]: Target SIGNI on your opponent's field gets -5000 power until end of turn.

Enter(C)(C)(C)(C): Your opponent cannot attack with SIGNI with power 10000 or less this turn.

(The text before the colon indicates the [Enter] ability's cost. You may choose not to pay it, in which case the [Enter] ability will not activate.)