Xeric, Dragonslayer

If Xeric, Dragonslayer would deal damage to a
permanent or player, you may pay {r}. If you do
Xeric deals that much damage plus 2 instead.
{t}: Xeric, Dragonslayer deals 1 damage to any
target.
{2}{b}{r},{t}: Destroy target creature. Xeric, Dragonslayer doesn't untap during your next
untap step.