Rais, Poison Of Evolution

Flying, Deathtouch
Whenever a creature you control with deathtouch
deals combat damage to a player, you may pay {g/u}. If the cost was payed with {g}, then put a
+1/+1 counter on the creature, otherwise draw
a card and proliferate instead.
Remove a +1/+1 counter from Rais, {t}: Target creature gains deathtouch until end of turn.