Teenage Mutant Ninja Turtles Eternal

Enchantment

When this enchantment enters, support 2. (Put a +1/+1 counter on each of up to two target creatures.)
{1}: Choose target creature with a counter on it. When that creature dies this turn, return that card to its owner's hand.

Together Forever

Final Fantasy Commander

Artifact

When this artifact enters, support X. (Put a +1/+1 counter on each of up to X target creatures.)
Go for the Goal! — {3}, {T}: Until end of turn, target creature gains "Whenever this creature deals combat damage to a player, draw a card for each kind of counter on it" and it can't be blocked this turn.

Blitzball Stadium

Creature — Elf Advisor

When this creature enters, support 2. (Put a +1/+1 counter on each of up to two other target creatures.)
Whenever you put one or more counters on a creature you don't control, draw a card.

Generous Patron

Foundations Jumpstart

Creature — Bird

Flying
When this creature enters, support 2. (Put a +1/+1 counter on each of up to two other target creatures.)

Expedition Raptor

Creature — Homunculus

At the beginning of combat on your turn, you may pay {3}{W}. If you do, support 2. (Put a +1/+1 counter on each of up to two other target creatures.)

Jubilant Mascot

Creature — Kor Knight Ally

When this creature enters, support 3. (Put a +1/+1 counter on each of up to three other target creatures.)

Relief Captain

Sorcery

Support 2. (Put a +1/+1 counter on each of up to two target creatures.)
Draw a card.

Shoulder to Shoulder

Modern Horizons 3

Creature — Bird Soldier

Aerie Auxiliary

Ravnica: Clue Edition

Support 2. (Put a +1/+1 counter on each of up to two target creatures.)
Choose up to one target creature an opponent controls. Each creature you control with a +1/+1 counter on it deals damage equal to its power to that creature.

Nissa's Judgment

New Capenna Commander Promos

Creature — Bird Advisor

Flying
When this creature enters, support 6. (Put a +1/+1 counter on each of up to six other target creatures.)
Whenever a creature with a counter on it attacks one of your opponents, that creature gains flying until end of turn.

Skyboon Evangelist

Modern Horizons 2

Enchantment — Aura

Enchant creature
Enchanted creature can't attack or block.
When this Aura enters, support 2. (Put a +1/+1 counter on each of up to two target creatures.)

Captured by Lagacs

The List

Assist (Another player can pay up to {X} of this spell's cost. You choose the value of X.)
Support X. (Put a +1/+1 counter on each of up to X target creatures.)
Each creature with a +1/+1 counter on it gains trample until end of turn.

The Crowd Goes Wild

Instant

Support 2. (Put a +1/+1 counter on each of up to two target creatures.)

Lead by Example

2018 Heroes of the Realm

Legendary Creature — Dragon Angel

Legendary partner (You can have two commanders if this is one of them. The other one is promoted to legendary.)
Flying, vigilance
Teamwork — Whenever you attack or block with both Sol, Advocate Eternal and its partner, support 4 and investigate four times.

Sol, Advocate Eternal

Battlebond Promos

Soulblade Corrupter

Creature — Elf Warrior

Partner with Soulblade Corrupter (When this creature enters, target player may put Soulblade Corrupter into their hand from their library, then shuffle.)
When this creature enters, support 2. (Put a +1/+1 counter on each of up to two other target creatures.)

Soulblade Renewer

Battlebond

Creature — Lizard

When this creature enters, support 2. (Put a +1/+1 counter on each of up to two other target creatures.)

Saddleback Lagac

Duel Decks: Elves vs. Inventors

Creature — Elf Knight

When this creature enters, support 6. (Put a +1/+1 counter on each of up to six other target creatures.)
Whenever a creature you control with a +1/+1 counter on it dies, you gain 2 life.

Gladehart Cavalry

Oath of the Gatewatch

Support 2. (Put a +1/+1 counter on each of up to two target creatures.)
Untap each creature you control with a +1/+1 counter on it.

Unity of Purpose

Support 2. (Put a +1/+1 counter on each of up to two target creatures.)
Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.

Press into Service

Creature — Elf Soldier Ally

{4}{G}{W}: Support 2. (Put a +1/+1 counter on each of up to two other target creatures.)