Alatreon

Flying, trample.
Alatreon gains four +1/+1 counters for each non
basik land source used to cast Alatreon.
{u} Counter target spell.
{b} Alatreon gains menace.
{r} Alatreon gains haste and +1/+0.
{g} Gain one life.
{u}{b}{r}{g} Tap and destroy all other creatures.
Those creatures do not untap.