The Crowd Goes Wild

Assist (Another player can pay up to 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.

Huddle Up

Assist (Another player can pay up to of this spell’s cost.)
Two target players each draw a card.

Bring Down

Assist (Another player can pay up to of this spell’s cost.)
Destroy target creature with power 4 or greater.

Lava-Field Overlord

Assist (Another player can pay up to of this spell’s cost.)
Flying
When Lava-Field Overlord enters the battlefield, it deals 4 damage to target creature an opponent controls.

Play of the Game

Assist (Another player can pay up to of this spell’s cost.)
Exile all nonland permanents.

Bloodborn Scoundrels

Assist (Another player can pay up to of this spell’s cost.)
When Bloodborn Scoundrels enters the battlefield, target opponent loses 2 life and you gain 2 life.

Spellweaver Duo

Assist (Another player can pay up to of this spell’s cost.)
When Spellweaver Duo enters the battlefield, you may return target tapped creature to its owner’s hand.

Magma Hellion

Assist (Another player can pay up to of this spell’s cost.)
Trample, haste

Skystreamer

Assist (Another player can pay up to of this spell’s cost.)
Flying
When Skystreamer enters the battlefield, target player gains 4 life.

Out of Bounds

Assist (Another player can pay up to of this spell’s cost.)
Counter target spell.

The Crowd Goes Wild

Assist (Another player can pay up to 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.

Dwarven Lightsmith

Assist (Another player can pay up to of this spell’s cost.)
When Dwarven Lightsmith enters the battlefield, creatures your team controls get +1/+1 until end of turn.

Game Plan

Assist (Another player can pay up to of this spell’s cost.)
Each player shuffles their hand and graveyard into their library, then draws seven cards. Exile Game Plan.

Vampire Charmseeker

Assist (Another player can pay up to of this spell’s cost.)
Flying
When Vampire Charmseeker enters the battlefield, return target instant, sorcery, or creature card from a graveyard to its owner’s hand.

Fan Favorite

Assist (Another player can pay up to of this spell’s cost.)
: Fan Favorite gets +1/+1 until end of turn. Any player may activate this ability.

Gang Up

Assist (Another player can pay up to of this spell’s cost. You choose the value of X.)
Destroy target creature with power X or less.

Charging Binox

Assist (Another player can pay up to of this spell’s cost.)
Trample