Lava Cake

When Lava Cake enters the battlefield, you
may pay {r}. If you do, Lava Cake deals 3 damage to target creature.
{2}, {t}, Sacrifice Lava Cake: You gain 3 life.
When Lava Cake leaves the battlefield, you
may pay {1}{r}. If you do, Lava Cake deals 3 damage to target creature.