Trias Trodon

Dinosaurs you control have trample.
When Trias Trodon enters the battlefield,
create a green 0/0 Velociraptor swarm token.
Whenever one or more creatures you control
attack, proliferate.
Whenever one or more creatures you control
damage an enemy player, proliferate.
Whenever you proliferate, double counters
instead.
{2}, Trias Trodon gets flying until end of turn.