Assembly-Worker

: Target Assembly-Worker creature gets +1/+1 until end of turn.

Isochron Scepter

Imprint — When Isochron Scepter enters the battlefield, you may exile an instant card with converted mana cost 2 or less from your hand.
, : You may copy the exiled card. If you do, you may cast the copy without paying its mana cost.

Wild Evocation

At the beginning of each player’s upkeep, that player reveals a card at random from their hand. If it’s a land card, the player puts it onto the battlefield. Otherwise, the player casts it without paying its mana cost if able.

Alluring Siren

: Target creature an opponent controls attacks you this turn if able.

Master Transmuter

, , Return an artifact you control to its owner’s hand: You may put an artifact card from your hand onto the battlefield.

Thelonite Hermit

All Saprolings get +1/+1.
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)
When Thelonite Hermit is turned face up, create four 1/1 green Saproling creature tokens.

Angelheart Vial

Whenever you’re dealt damage, you may put that many charge counters on Angelheart Vial.
, , Remove four charge counters from Angelheart Vial: You gain 2 life and draw a card.

Harmless Assault

Prevent all combat damage that would be dealt this turn by attacking creatures.

Sarkhan the Mad

0: Reveal the top card of your library and put it into your hand. Sarkhan the Mad deals damage to himself equal to that card’s converted mana cost.
−2: Target creature’s controller sacrifices it, then that player creates a 5/5 red Dragon creature token with flying.
−4: Each Dragon creature you control deals damage equal to its power to target player or planeswalker.

Hand of Emrakul

You may sacrifice four Eldrazi Spawn rather than pay this spell’s mana cost.
Annihilator 1 (Whenever this creature attacks, defending player sacrifices a permanent.)

Consume the Meek

Destroy each creature with converted mana cost 3 or less. They can’t be regenerated.

Lay Bare

Counter target spell. Look at its controller’s hand.

Gigantomancer

: Target creature you control has base power and toughness 7/7 until end of turn.

Order of Yawgmoth

Fear (This creature can’t be blocked except by artifact creatures and/or black creatures.)
Whenever Order of Yawgmoth deals damage to a player, that player discards a card.

Wolfbriar Elemental

Multikicker (You may pay an additional any number of times as you cast this spell.)
When Wolfbriar Elemental enters the battlefield, create a 2/2 green Wolf creature token for each time it was kicked.

Selective Memory

Search your library for any number of nonland cards and exile them. Then shuffle your library.

Abyssal Persecutor

Flying, trample
You can’t win the game and your opponents can’t lose the game.

Vampire Bats

Flying (This creature can’t be blocked except by creatures with flying or reach.)
: Vampire Bats gets +1/+0 until end of turn. Activate this ability no more than twice each turn.

Lotus Cobra

Landfall — Whenever a land enters the battlefield under your control, add one mana of any color.

Gomazoa

Defender, flying
: Put Gomazoa and each creature it’s blocking on top of their owners’ libraries, then those players shuffle their libraries.

Mirrored Depths

Whenever a player casts a spell, that player flips a coin. If the player loses the flip, counter that spell.
Whenever you roll , target player reveals the top card of their library. If it’s a nonland card, you may cast it without paying its mana cost.