Bard, the Dragon Slayer

Reach, Deathtouch
Bard has double strike as long as he is fighting a creature with flying.
{u}{r}{g}, {t}: Sacrifice a dragon. Bard deals X
damage to any target where X is that dragon's
power. Then, Bard deals X damage to any target
where X is that dragon's toughness. If either X is
4 or higher, untap Bard, then draw 2 cards, gain
2 life, and add 2 mana of different colors.