The Demiurge Tree

{t}: Add {w}, {u}, {b}, {r}, or {g} to your mana pool.
{u}{b}, {t}: Draw a card, target player must exile a
card from their graveyard.
{w}{r}, {t}: Deal 1 damage to target player, Your
creatures gain +1/+1 until end of turn.
{g}, {t}: Restore 3 Health.