Mirror March

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.

T, Sacrifice two other creatures: Any number of target players each lose 2 life and sacrifice a creature of their choice. You add BB and draw a card. (Activate only as an instant.)

When this creature enters, exile target nonland permanent an opponent controls and all other nonland permanents that player controls with the same name as that permanent until this creature leaves the battlefield.

T: Add one mana of any type that a land you control could produce. If this creature has a +1/+1 counter on it, add three mana of that type instead. 3GG: Adapt 3. (If this creature has no +1/+1 counters on it, put three +1/+1 counters on it.)

Destroy target artifact, creature, or planeswalker.

Destroy target artifact, creature, or planeswalker.

Whenever you cast a multicolored spell, create a 1/1 white Human creature token.

2G: Adapt 2. (If this creature has no +1/+1 counters on it, put two +1/+1 counters on it.) Whenever one or more +1/+1 counters are put on this creature, you may search your library for a card named Growth-Chamber Guardian, reveal it, put it into your hand, then shuffle.