Exile all creatures. Each player creates a 0/0 green and blue Fractal creature token and puts a number of +1/+1 counters on it equal to the total power of creatures they controlled that were exiled this way.
"A fine example of addition by subtraction." —Deekah, professor of fractal theory
Flying Ward—{3}, Pay 3 life. Whenever you cast a noncreature spell, create X 1/1 red Phyrexian Goblin creature tokens, where X is the mana value of that spell. They gain haste until end of turn.
When Ovinomancer enters the battlefield, sacrifice it unless you return three basic lands you control to their owner's hand. {T}, Return Ovinomancer to its owner's hand: Destroy target creature. It can't be regenerated. That creature's controller creates a 0/1 green Sheep creature token.
{2}{G}, {T}: Create a 1/1 colorless Servo artifact creature token. {4}{G}, {T}: Create an X/X colorless Construct artifact creature token, where X is the number of creatures you control.
"Inspiration is reciprocal: we all have a responsibility to each other to create."
Vigilance Ox Drover can't be blocked by Oxen. Whenever Ox Drover enters the battlefield or attacks, target opponent creates a 2/4 white Ox creature token and you draw a card.
"Ho, Shaggyfoot! Lumpton, pick up those hooves! Edgewall by sundown or I'll sell the lot of you to a witch!"
Oyaminartok, Polar Werebear has hexproof if it hasn't dealt damage yet. Whenever Oyaminartok deals combat damage to a player, create a Food token. {U}, Sacrifice a Food: Draft a card from Oyaminartok's spellbook. When you do, add {U}{U}{U}. Spend this mana only to cast blue creature spells.
Menace Whenever a player casts their first spell each turn, they create a Treasure token. Whenever an artifact an opponent controls is put into a graveyard from the battlefield, Pain Distributor deals 1 damage to that player.
Other Dinosaurs you control have haste. When Palani's Hatcher enters the battlefield, create two 0/1 green Dinosaur Egg creature tokens. At the beginning of combat on your turn, if you control one or more Eggs, sacrifice an Egg, then create a 3/3 green Dinosaur creature token.
When one or more creatures you control deal combat damage to a player, if there is no monarch, you become the monarch. Whenever chaos ensues, create a 1/1 black Assassin creature token with deathtouch and haste.
At the beginning of your upkeep, put a spore counter on Pallid Mycoderm. Remove three spore counters from Pallid Mycoderm: Create a 1/1 green Saproling creature token. Sacrifice a Saproling: Each creature you control that's a Fungus or a Saproling gets +1/+1 until end of turn.
Paradox Zone enters the battlefield with a growth counter on it. At the beginning of your end step, double the number of growth counters on Paradox Zone. Then create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it, where X is the number of growth counters on Paradox Zone.
Enchant creature At the beginning of your upkeep, enchanted creature's controller sacrifices it and you create a 1/1 colorless Phyrexian Myr artifact creature token.
Flying, first strike, vigilance Whenever Parhelion II attacks, create two 4/4 white Angel creature tokens with flying and vigilance that are attacking. Crew 4
Whenever Pashalik Mons or another Goblin you control dies, Pashalik Mons deals 1 damage to any target. {3}{R}, Sacrifice a Goblin: Create two 1/1 red Goblin creature tokens.
Flying When Patagia Viper enters the battlefield, create two 1/1 green and blue Snake creature tokens. When Patagia Viper enters the battlefield, sacrifice it unless {U} was spent to cast it.
Devoid When Path of Annihilation enters the battlefield, create two 0/1 colorless Eldrazi Spawn creature tokens with "Sacrifice this creature: Add {C}." Eldrazi you control have "{T}: Add one mana of any color." Whenever you cast a creature spell with mana value 7 or greater, you gain 4 life.
Create X 1/1 white Spirit creature tokens with flying. Will of the Planeswalkers — Starting with you, each player votes for planeswalk or chaos. If planeswalk gets more votes, planeswalk. If chaos gets more votes or the vote is tied, chaos ensues.
When Path to the World Tree enters the battlefield, search your library for a basic land card, reveal it, put it into your hand, then shuffle. {2}{W}{U}{B}{R}{G}, Sacrifice Path to the World Tree: You gain 2 life and draw two cards. Target opponent loses 2 life. Path to the World Tree deals 2 damage to up to one target creature. You create a 2/2 green Bear creature token.