Yoshi, Eater of Worlds

Gains every keyword each Yoshi creatures
you control have.
Whenever Yoshi Eater of Worlds
attacks you may sacrifice a Yoshi
creature you control and when
you do you may destroy target permanent
and this creature gains +3/+1.
Sacrifice Yoshi Eater of Worlds and 4 Yoshi creatures you control: Exile every non land
permanent opponents control