Mold Adder

Whenever an opponent casts a blue or black spell, you may put a +1/+1 counter on this creature.

Giant Growth

Target creature gets +3/+3 until end of turn.

Mask of Riddles

Equipped creature has fear. (It can’t be blocked except by artifact creatures and/or black creatures.)
Whenever equipped creature deals combat damage to a player, you may draw a card.
Equip

Flurry of Wings

Create X 1/1 white Bird Soldier creature tokens with flying, where X is the number of attacking creatures.

Worldly Counsel

Domain — Look at the top X cards of your library, where X is the number of basic land types among lands you control. Put one of those cards into your hand and the rest on the bottom of your library in any order.

Court Homunculus

Court Homunculus gets +1/+1 as long as you control another artifact.

Faerie Mechanist

Flying
When Faerie Mechanist enters, look at the top three cards of your library. You may reveal an artifact card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Fact or Fiction

Reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.

Furnace Whelp

Flying
: Furnace Whelp gets +1/+0 until end of turn.

Esper Battlemage

, : Prevent the next 2 damage that would be dealt to you this turn.
, : Target creature gets -1/-1 until end of turn.

Scourglass

, Sacrifice Scourglass: Destroy all permanents except for artifacts and lands. Activate only during your upkeep.

Master of Etherium

Master of Etherium’s power and toughness are each equal to the number of artifacts you control.
Other artifact creatures you control get +1/+1.

Spitemare

Whenever Spitemare is dealt damage, it deals that much damage to any target.

Cenn’s Enlistment

Create two 1/1 white Kithkin Soldier creature tokens.
Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)

Armored Ascension

Enchant creature
Enchanted creature gets +1/+1 for each Plains you control and has flying.

Put Away

Counter target spell. You may shuffle up to one target card from your graveyard into your library.