Vodalian War Machine
From Fallen Empires set
Vodalian War Machine
Creature — Wall
0/4
Defender (This creature can't attack.)
Tap an untapped Merfolk you control: This creature can attack this turn as though it didn't have defender.
Tap an untapped Merfolk you control: This creature gets +2/+1 until end of turn.
When this creature dies, destroy all Merfolk tapped this turn to pay for its abilities.
Rulings
- The Merfolk are tapped during announcement and as a cost. The ability can't be announced if the Merfolk are not in an untapped state.