Forcemage Advocate

{T}: Return target card from an opponent's graveyard to their hand. Put a +1/+1 counter on target creature.

Fork

Copy target instant or sorcery spell, except that the copy is red. You may choose new targets for the copy.

Spurnmage Advocate

{T}: Return two target cards from an opponent's graveyard to their hand. Destroy target attacking creature.

Reverberate

Copy target instant or sorcery spell. You may choose new targets for the copy.

Serra Advocate

Flying
{T}: Target attacking or blocking creature gets +2/+2 until end of turn.

Dualcaster Mage

Flash
When this creature enters, copy target instant or sorcery spell. You may choose new targets for the copy.

Pulsemage Advocate

{T}: Return three target cards from an opponent's graveyard to their hand. Return target creature card from your graveyard to the battlefield.

Atla Palani, Nest Tender

{2}, {T}: Create a 0/1 green Egg creature token with defender.
Whenever an Egg you control dies, reveal cards from the top of your library until you reveal a creature card. Put that card onto the battlefield and the rest on the bottom of your library in a random order.

Wild Ricochet

You may choose new targets for target instant or sorcery spell. Then copy that spell. You may choose new targets for the copy.

Juniper Order Advocate

As long as this creature is untapped, green creatures you control get +1/+1.

Mirrorwing Dragon

Flying
Whenever a player casts an instant or sorcery spell that targets only this creature, that player copies that spell for each other creature they control that the spell could target. Each copy targets a different one of those creatures.

Twinflame

Strive — This spell costs {2}{R} more to cast for each target beyond the first.
Choose any number of target creatures you control. For each of them, create a token that's a copy of that creature, except it has haste. Exile those tokens at the beginning of the next end step.

Radiate

Choose target instant or sorcery spell that targets only a single permanent or player. Copy that spell for each other permanent or player the spell could target. Each copy targets a different one of those permanents and players.

Gahiji, Honored One

Whenever a creature attacks one of your opponents or a planeswalker an opponent controls, that creature gets +2/+0 until end of turn.

Shieldmage Advocate

{T}: Return target card from an opponent's graveyard to their hand. Prevent all damage that would be dealt to any target this turn by a source of your choice.

Nullmage Advocate

{T}: Return two target cards from an opponent's graveyard to their hand. Destroy target artifact or enchantment.