Risennath

When Risennath enters the battlefield, draw 2
cards, then put a land from your hand onto the battlefield.
Landfall - Whenever a land enters the battlefield
under your control, you gain 4 life and draw 2
cards. If it was the second time this turn, repeat
this process but add {w}{u}{r}{g} to your mana
pool and deal 4 damage to each creature.
Whenever Risennath is dealt damage,
regenerate it and draw a card, then add {r}{g},
gain 2 life, and proliferate.