Karela, Goddess of Forest

Indestructible, Trample
When Karela, Goddess of Forest enters the battlefield, each land you control creates double the mana till end of turn
If Karela, Goddess of Forest would become blocked by a non-green creature Karela, Goddess of Forest gains flying till end of attack stage
As long as Karela, Goddess of Forest is on the battlefield, all creatures you control have trample
You have no max hand size