The Rules of Mwonvuli

Whenever you put a card into your graveyard
from anywhere for the second time each turn,
choose one or more according to its types —
• Land: Return up to one target Swamp,
Mountain or Forest card from your graveyard to
the battlefield tapped.
• Creature: Return up to one target black, red or
green creature card from your graveyard to your
hand.
• Other types: Destroy target nonland permanent.