Atraxa, Praetors’ Voice

Flying, vigilance, deathtouch, lifelink
At the beginning of your end step, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Valduk, Keeper of the Flame

At the beginning of combat on your turn, for each Aura and Equipment attached to Valduk, Keeper of the Flame, create a 3/1 red Elemental creature token with trample and haste. Exile those tokens at the beginning of the next end step.

Shalai, Voice of Plenty

Flying
You, planeswalkers you control, and other creatures you control have hexproof.
: Put a +1/+1 counter on each creature you control.

Valduk, Keeper of the Flame

At the beginning of combat on your turn, for each Aura and Equipment attached to Valduk, Keeper of the Flame, create a 3/1 red Elemental creature token with trample and haste. Exile those tokens at the beginning of the next end step.

Shalai, Voice of Plenty

Flying
You, planeswalkers you control, and other creatures you control have hexproof.
: Put a +1/+1 counter on each creature you control.

Shalai, Voice of Plenty

Flying
You, planeswalkers you control, and other creatures you control have hexproof.
: Put a +1/+1 counter on each creature you control.

Construct

This creature gets +1/+1 for each artifact you control.

Serra Disciple

Flying, first strike
Whenever you cast a historic spell, Serra Disciple gets +1/+1 until end of turn. (Artifacts, legendaries, and Sagas are historic.)

Goblin Welder

: Choose target artifact a player controls and target artifact card in that player’s graveyard. If both targets are still legal as this ability resolves, that player simultaneously sacrifices the artifact and returns the artifact card to the battlefield.

Ghirapur Gearcrafter

When Ghirapur Gearcrafter enters the battlefield, create a 1/1 colorless Thopter artifact creature token with flying. (A creature with flying can’t be blocked except by creatures with flying or reach.)

Ezuri, Renegade Leader

: Regenerate another target Elf.
: Elf creatures you control get +3/+3 and gain trample until end of turn.

Storm the Vault // Vault of Catlacan

Whenever one or more creatures you control deal combat damage to a player, create a Treasure token. (It’s an artifact with “, Sacrifice this artifact: Add one mana of any color.”)
At the beginning of your end step, if you control five or more artifacts, transform Storm the Vault.

Warkite Marauder

Flying
Whenever Warkite Marauder attacks, target creature defending player controls loses all abilities and has base power and toughness 0/1 until end of turn.

Storm the Vault // Vault of Catlacan

Whenever one or more creatures you control deal combat damage to a player, create a Treasure token. (It’s an artifact with “, Sacrifice this artifact: Add one mana of any color.”)
At the beginning of your end step, if you control five or more artifacts, transform Storm the Vault.

Path of Mettle // Metzali, Tower of Triumph

When Path of Mettle enters the battlefield, it deals 1 damage to each creature that doesn’t have first strike, double strike, vigilance, or haste.
Whenever you attack with at least two creatures that have first strike, double strike, vigilance, and/or haste, transform Path of Mettle.

Deadeye Rig-Hauler

Raid — When Deadeye Rig-Hauler enters the battlefield, if you attacked this turn, you may return target creature to its owner’s hand.

Warkite Marauder

Flying
Whenever Warkite Marauder attacks, target creature defending player controls loses all abilities and has base power and toughness 0/1 until end of turn.

Warkite Marauder

Flying
Whenever Warkite Marauder attacks, target creature defending player controls loses all abilities and has base power and toughness 0/1 until end of turn.

Blatant Thievery

For each opponent, gain control of target permanent that player controls.

Emperor’s Vanguard

Whenever Emperor’s Vanguard deals combat damage to a player, it explores. (Reveal the top card of your library. Put that card into your hand if it’s a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

Spell Swindle

Counter target spell. Create X Treasure tokens, where X is that spell’s converted mana cost. (They’re artifacts with “, Sacrifice this artifact: Add one mana of any color.”)

Angrath’s Marauders

If a source you control would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.