Each other creature you control enters the battlefield with a number of additional +1/+1 counters on it equal to Master Biomancer's power and as a Mutant in addition to its other types.

Trample Cryptborn Horror enters the battlefield with X +1/+1 counters on it, where X is the total life lost by your opponents this turn.

Defender (This creature can't attack.) When a creature attacks you or a planeswalker you control, if Guardian of the Ages has defender, it loses defender and gains trample.

Flying (This creature can't be blocked except by creatures with flying or reach.) Nightmare's power and toughness are each equal to the number of Swamps you control.

Exile an instant or sorcery spell you control: Put two +1/+1 counters on Nivmagus Elemental. (That spell won't resolve.)

Daxos of Meletis can't be blocked by creatures with power 3 or greater. Whenever Daxos of Meletis deals combat damage to a player, exile the top card of that player's library. You gain life equal to that card's mana value. Until end of turn, you may cast that card and you may spend mana as though it were mana of any color to cast that spell.

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) Whenever a +1/+1 counter is put on Fathom Mage, you may draw a card.

Flying Whenever a creature attacks you or a planeswalker you control, you may draw a card.

Prime Speaker Zegana enters the battlefield with X +1/+1 counters on it, where X is the greatest power among other creatures you control. When Prime Speaker Zegana enters the battlefield, draw cards equal to its power.

Each player shuffles their hand and graveyard into their library, then draws seven cards. Exile Time Reversal.

Whenever a creature deals combat damage to you, that creature's controller gains control of Contested War Zone. {T}: Add {C}. {1}, {T}: Attacking creatures get +1/+0 until end of turn.

{T}: Add {C}. {3}{G}{W}, {T}, Tap two untapped creatures you control, Sacrifice Grove of the Guardian: Create an 8/8 green and white Elemental creature token with vigilance.

{T}: Add {C}. {R}{W}, {T}: Target creature gets +2/+0 and gains vigilance and haste until end of turn.

{T}: Add {C}. {3}{B}{R}, {T}: Stensia Bloodhall deals 2 damage to target player or planeswalker.

Temple of Abandon enters the battlefield tapped. When Temple of Abandon enters the battlefield, scry 1. {T}: Add {R} or {G}.

Indestructible As Phylactery Lich enters the battlefield, put a phylactery counter on an artifact you control. When you control no permanents with phylactery counters on them, sacrifice Phylactery Lich.

Living weapon (When this Equipment enters the battlefield, create a 0/0 black Phyrexian Germ creature token, then attach this to it.) Equipped creature gets +X/+X, where X is the number of creature cards in all graveyards. Equip {2}

For each creature, its controller sacrifices it unless they pay X life.

Defender When Akroan Horse enters the battlefield, an opponent gains control of it. At the beginning of your upkeep, each opponent creates a 1/1 white Soldier creature token.

At the beginning of your upkeep, populate. (Create a token that's a copy of a creature token you control.)

Whenever you cast an instant or sorcery spell, create a 2/2 blue Drake creature token with flying.

Search your library for a card and put that card into your hand. If this spell was cast from a graveyard, instead search your library for two cards and put those cards into your hand. Then shuffle. Flashback {7}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)