Jivana the plant of life

At the beginning of your upkeep create a 1,1 token creature Titan seed.
Sacrifice 3 1,1 token creature Titan seeds: create a
0,5 token creature Titan cactus with defender and Deathtouch.
Sacrifice 10 1,1 token creature Titan seeds: create
a non- legendary copy of this enchantment.
Sacrifice 20 1,1 token creature Titan seeds: create
a 20, 20 token create Titan tree with trample and
reach.