too many infinites

Landfall — Whenever a land you control enters, untap this creature. : Untap target land.

All Forests and all Saprolings are 1/1 green Saproling creatures and Forest lands in addition to their other types. (They're affected by summoning sickness.)

Enchant creature Enchanted creature has ": Create a token that's a copy of this creature, except it has haste. Exile that token at the beginning of the next end step."

(: Add .)