cheap but good

Experiment Kraj has all activated abilities of each other creature with a +1/+1 counter on it. : Put a +1/+1 counter on target creature.

Creatures don't untap during their controllers' untap steps. Whenever a creature enters, untap all creatures.

Creatures you control get +3/+3 and gain trample until end of turn. (Each of those creatures can deal excess combat damage to the player or planeswalker it's attacking.)

Imprint — When this artifact enters, you may exile a creature card from your hand. , : Create a token that's a copy of the exiled card. X is the mana value of that card.

: Put a +1/+1 counter on target creature for each Elf you control.

Multikicker (You may pay an additional any number of times as you cast this spell.) This creature enters with a +1/+1 counter on it for each time it was kicked. Other Elf creatures you control get +1/+1 for each +1/+1 counter on this creature.

Flying