When Zegana, Utopian Speaker enters, if you control another creature with a +1/+1 counter on it, draw a card.: Adapt 4. (If this creature has no +1/+1 counters on it, put four +1/+1 counters on it.)Each creature you control with a +1/+1 counter on it has trample.
Spectacle (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.)Flying, trampleAt the beginning of your upkeep, Spawn of Mayhem deals 1 damage to each player. Then if you have 10 or less life, put a +1/+1 counter on Spawn of Mayhem.
Riot (This creature enters with your choice of a +1/+1 counter or haste.)When Ravager Wurm enters, choose up to one —• Ravager Wurm fights target creature you don't control.• Destroy target land with an activated ability that isn't a mana ability.
: Put a +1/+1 counter on target creature you control.Whenever one or more +1/+1 counters are put on a creature you control, put that many growth counters on Simic Ascendancy.At the beginning of your upkeep, if Simic Ascendancy has twenty or more growth counters on it, you win the game.
Gutterbones enters tapped.: Return Gutterbones from your graveyard to your hand. Activate only during your turn and only if an opponent lost life this turn.
: Adapt 1. (If this creature has no +1/+1 counters on it, put a +1/+1 counter on it.)Whenever one or more +1/+1 counters are put on Benthic Biomancer, draw a card, then discard a card.
Each opponent can't cast noncreature spells with mana value greater than the number of lands that player controls.Whenever an opponent casts a spell, if no mana was spent to cast it, counter that spell.