Backup 1
Whenever this creature attacks, for each attacking modified creature you control, create a tapped and attacking token that's a copy of that creature. Exile those tokens at end of combat. (Equipment, Auras you control, and counters are modifications.)

Choose one —
• Gain control of all creatures with power 4 or greater until end of turn. Untap those creatures. They gain haste until end of turn.
• Gain control of all creatures with power 3 or less until end of turn. Untap those creatures. They gain haste until end of turn.

( can be paid with either or 2 life.)
Flying
: This creature gets +1/+0 until end of turn.

Menace
When this creature enters, it deals 1 damage to any target.
Mountaincycling

Each creature you control gets +1/+0 for each time it has attacked this turn.
Landfall — Whenever a land you control enters, if it's your main phase, there's an additional combat phase after this phase. At the beginning of that combat, untap all creatures you control.

Whenever this creature or another Ally you control enters, you may have this creature deal damage to target creature equal to the number of Allies you control.

When Muxus enters, reveal the top six cards of your library. Put all Goblin creature cards with mana value 5 or less from among them onto the battlefield and the rest on the bottom of your library in a random order.
Whenever Muxus attacks, it gets +1/+1 until end of turn for each other Goblin you control.

Menace
Whenever this creature enters or attacks, create two 1/1 black Rat creature tokens with "This token can't block." Then if you control five or more Rats, each Rat you control gets +2/+0 until end of turn.

Whenever this creature attacks, gain control of target Equipment an opponent controls until end of turn. Attach it to this creature. When you lose control of that Equipment, unattach it.

Menace
Whenever this creature deals damage, create that many Blood tokens.
: This creature deals 1 damage to any target.

Add . You may open a sealed Magic booster pack. Until end of turn, you may cast spelis from among the cards in that booster pack.

Impending 4 —
Whenever this permanent enters or attacks, it deals 4 damage to any target.

Battlefront — This spell costs less to cast for each opponent you attacked this turn.
Untap all creatures that attacked this turn. After this main phase, there is an additional combat phase followed by an additional main phase.

Flying
: This creature gets +1/+0 until end of turn.
Suspend 2 —
Whenever an opponent casts a spell, if this card is suspended, that player may put a time counter on this card.

Goblin offering (You may cast this card any time you could cast an instant by sacrificing a Goblin and paying the difference in mana costs between this and the sacrificed Goblin. Mana cost includes color.)
Whenever Patron of the Akki attacks, creatures you control get +2/+0 until end of turn.

Pinnacle of Rage deals 3 damage to each of two targets.

Flying
Devour 2
Whenever this creature attacks, it deals damage to any target equal to the number of +1/+1 counters on this creature.

You may sacrifice two Mountains rather than pay this spell's mana cost.
Destroy all artifacts.

When this creature dies, it deals 3 damage to any target.

You may exile a red card from your hand rather than pay this spell's mana cost.
Pyrokinesis deals 4 damage divided as you choose among any number of target creatures.

Creatures you control have double strike.

Flying
Whenever this creature attacks, you may sacrifice another creature. If you do, this creature gains double strike until end of turn.

Destroy two target lands.

Shuffle your library, then mill four cards. Put each creature card milled this way onto the battlefield. They gain haste. At the beginning of the next end step, return those creatures to their owner's hand.
Flashback

Menace
Whenever Raphael deals combat damage to a player for the first time each turn, untap all attacking creatures. After this combat phase, there is an additional combat phase.

Sneak
Each player may discard their hand and draw seven cards.

Bargain
Flying, haste
When this creature enters, if it was bargained, add four mana in any combination of colors.
: This creature deals 1 damage to any target.

Flying
Fire Breath — When this creature enters, it deals 4 damage to each opponent.

Reach, trample
Enrage — Whenever Red Hulk is dealt damage, put a +1/+1 counter on him. When you do, he deals damage equal to the number of +1/+1 counters on him to any other target.

During your turn, each instant and sorcery card in your graveyard has flashback. Its flashback cost is equal to its mana cost.