Buster Gundil Cubic Behemoth

Trample.
As an additional cost to cast this card sacrifice
3 cubic creatures.
When this creature attack, create 2 tokens of
Buster Gundil, Cubic Behemoth
that are tabbed and attacking.
Exile the tokens at the end step.
When Buster Gundil, Cubic Behemoth enters discard pile.
Target 3 Cubic creatures in the discard pile and summon them.