Takanil, Lord of Lava

Haste
Whenever Takanil, Lord of Lava attacks, you
may pay {x}{x}{r}. When you do, put up to X red
creature cards from your hand onto the
battlefield tapped and attacking. At the
beginning of your end step, return those
creatures to your hand and you lose life equal to
the amount of mana you paid to activate this
ability.