infinite land creatures with haste?

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

(This land isn't a spell, it's affected by summoning sickness, and it has ": Add .")

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."