Seji, Lord of Beasts

Trample, Haste
Sacrifice 2 elementals: Create a 2/2 green Bear
creature token.
Sacrifice 2 bear creature tokens: Create a 4/4
green Beast creature token.
Sacrifice 2 beast creature tokens: Create a 8/8
green Giant creature token.
Sacrifice 2 giant creature tokens: Create a 16/16
colorless Golem creature token.