infinite elves. note: only works in elf decks

Imprint — , : You may exile an instant or sorcery card with mana value X from your hand. At the beginning of your upkeep, you may copy a card exiled with this artifact. If you do, you may cast the copy without paying its mana cost.

Create a 1/1 green Elf Warrior creature token for each Elf you control.

Enchant creature Enchanted creature has ": Create a 1/1 green Elf Warrior creature token."