Horror of the Broken Lands

Whenever you cycle or discard another card, Horror of the Broken Lands gets +2/+1 until end of turn.
Cycling (, Discard this card: Draw a card.)

Gideon, Martial Paragon

+2: Untap all creatures you control. Those creatures get +1/+1 until end of turn.
0: Until end of turn, Gideon, Martial Paragon becomes a 5/5 Human Soldier creature with indestructible that’s still a planeswalker. Prevent all damage that would be dealt to him this turn.
−10: Creatures you control get +2/+2 until end of turn. Tap all creatures your opponents control.

Grasping Dunes

: Add .
, , Sacrifice Grasping Dunes: Put a -1/-1 counter on target creature. Activate this ability only any time you could cast a sorcery.

Hooded Brawler

You may exert Hooded Brawler as it attacks. When you do, it gets +2/+2 until end of turn. (An exerted creature won’t untap during your next untap step.)

The Unspeakable

Flying, trample
Whenever The Unspeakable deals combat damage to a player, you may return target Arcane card from your graveyard to your hand.

Abyssal Specter

Flying
Whenever Abyssal Specter deals damage to a player, that player discards a card.

Vital Splicer

When Vital Splicer enters the battlefield, create a 3/3 colorless Golem artifact creature token.
: Regenerate target Golem you control.

Scrap Trawler

Whenever Scrap Trawler or another artifact you control is put into a graveyard from the battlefield, return to your hand target artifact card in your graveyard with lesser converted mana cost.

Yahenni’s Expertise

All creatures get -3/-3 until end of turn.
You may cast a spell with converted mana cost 3 or less from your hand without paying its mana cost.

Gonti’s Machinations

Whenever you lose life for the first time each turn, you get . (You get an energy counter. Damage causes loss of life.)
Pay , Sacrifice Gonti’s Machinations: Each opponent loses 3 life. You gain life equal to the life lost this way.

Yahenni’s Expertise

All creatures get -3/-3 until end of turn.
You may cast a spell with converted mana cost 3 or less from your hand without paying its mana cost.

Scrap Trawler

Whenever Scrap Trawler or another artifact you control is put into a graveyard from the battlefield, return to your hand target artifact card in your graveyard with lesser converted mana cost.

Fiery Fall

Fiery Fall deals 5 damage to target creature.
Basic landcycling (, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle your library.)

Preyseizer Dragon

Flying
Devour 2 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with twice that many +1/+1 counters on it.)
Whenever Preyseizer Dragon attacks, it deals damage to any target equal to the number of +1/+1 counters on Preyseizer Dragon.

Hellkite Hatchling

Devour 1 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with that many +1/+1 counters on it.)
Hellkite Hatchling has flying and trample if it devoured a creature.

O-Kagachi, Vengeful Kami

Flying, trample
Whenever O-Kagachi, Vengeful Kami deals combat damage to a player, if that player attacked you during their last turn, exile target nonland permanent that player controls.

The Unspeakable

Flying, trample
Whenever The Unspeakable deals combat damage to a player, you may return target Arcane card from your graveyard to your hand.

Traverse the Outlands

Search your library for up to X basic land cards, where X is the greatest power among creatures you control. Put those cards onto the battlefield tapped, then shuffle your library.

Soul of New Phyrexia

Trample
: Permanents you control gain indestructible until end of turn.
, Exile Soul of New Phyrexia from your graveyard: Permanents you control gain indestructible until end of turn.

Progenitor Mimic

You may have Progenitor Mimic enter the battlefield as a copy of any creature on the battlefield, except it has “At the beginning of your upkeep, if this creature isn’t a token, create a token that’s a copy of this creature.”

Clan Defiance

Choose one or more —
• Clan Defiance deals X damage to target creature with flying.
• Clan Defiance deals X damage to target creature without flying.
• Clan Defiance deals X damage to target player or planeswalker.