Grim Giganotosaurus

: Monstrosity 10. This ability costs less to activate for each creature with power 4 or greater your opponents control. (If this creature isn’t monstrous, put ten +1/+1 counters on it and it becomes monstrous.)
When Grim Giganotosaurus becomes monstrous, destroy all artifacts and creatures other than Grim Giganotosaurus.

Puppeteer Clique

Flying
When Puppeteer Clique enters, put target creature card from an opponent’s graveyard onto the battlefield under your control. It gains haste. At the beginning of your next end step, exile it.
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner’s control with a -1/-1 counter on it.)

Verdeloth the Ancient

Kicker (You may pay an additional as you cast this spell.)
Saproling creatures and other Treefolk creatures get +1/+1.
When Verdeloth the Ancient enters, if it was kicked, create X 1/1 green Saproling creature tokens.

Finale of Devastation

Search your library and/or graveyard for a creature card with mana value X or less and put it onto the battlefield. If you search your library this way, shuffle. If X is 10 or more, creatures you control get +X/+X and gain haste until end of turn.

Twisted Abomination

: Regenerate Twisted Abomination. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)
Swampcycling (, Discard this card: Search your library for a Swamp card, reveal it, put it into your hand, then shuffle.)

Obscuring Haze

If you control a commander, you may cast this spell without paying its mana cost.
Prevent all damage that would be dealt this turn by creatures your opponents control.

Karn, Legacy Reforged

Karn, Legacy Reforged’s power and toughness are each equal to the greatest mana value among artifacts you control.
At the beginning of your upkeep, add for each artifact you control. This mana can’t be spent to cast nonartifact spells. Until end of turn, you don’t lose this mana as steps and phases end.

Open the Way

X can’t be greater than the number of players in the game.
Reveal cards from the top of your library until you reveal X land cards. Put those land cards onto the battlefield tapped and the rest on the bottom of your library in a random order.

Tamiyo’s Immobilizer

Tamiyo’s Immobilizer enters with four oil counters on it.
, Remove an oil counter from Tamiyo’s Immobilizer: Tap target artifact or creature.

Hunting Grounds

Threshold — As long as seven or more cards are in your graveyard, Hunting Grounds has “Whenever an opponent casts a spell, you may put a creature card from your hand onto the battlefield.”

Ridgetop Raptor

Double strike (This creature deals both first-strike and regular combat damage.)

Battlefield Scrounger

Threshold — Put three cards from your graveyard on the bottom of your library: Battlefield Scrounger gets +3/+3 until end of turn. Activate only once each turn and only if seven or more cards are in your graveyard.

Gamble

Search your library for a card, put that card into your hand, discard a card at random, then shuffle.

Last Chance

Take an extra turn after this one. At the beginning of that turn’s end step, you lose the game.

Faceless Butcher

When Faceless Butcher enters, exile another target creature.
When Faceless Butcher leaves the battlefield, return the exiled card to the battlefield under its owner’s control.

Talon of Pain

Whenever a source you control other than Talon of Pain deals damage to an opponent, put a charge counter on Talon of Pain.
, , Remove X charge counters from Talon of Pain: It deals X damage to any target.

Condemn

Put target attacking creature on the bottom of its owner’s library. Its controller gains life equal to its toughness.

Molten Slagheap

: Add .
, : Put a storage counter on Molten Slagheap.
, Remove X storage counters from Molten Slagheap: Add X mana in any combination of and/or .

Coalhauler Swine

Whenever Coalhauler Swine is dealt damage, it deals that much damage to each player.

Mouth of Ronom

: Add .
, , Sacrifice Mouth of Ronom: It deals 4 damage to target creature. ( can be paid with one mana from a snow source.)

Cavern Harpy

Flying
When Cavern Harpy enters, return a blue or black creature you control to its owner’s hand.
Pay 1 life: Return Cavern Harpy to its owner’s hand.