infinite OVERRUN

Whenever a nonartifact permanent you control enters, you may return another permanent you control that shares a permanent type with it to its owner's hand.

Whenever another creature enters, you gain 1 life.

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

All lands are 1/1 creatures that are still lands.

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.)

Defender When this creature enters, you may return target instant or sorcery card from your graveyard to your hand.