Illusionary Mask [Beta Edition] Torment Fists of the Gadgets introduces

Fists of the Gadgets introduces 11 new cards for "Fire Fist" Decks including Link Monsters that let you skip paying costs for your "Fire Fist" effects or take control of enemy monsters

for example

Set: Beta Edition Type: Artifact Rarity: Rare Cost: {0} {T}: Add {W}

Catan’s wealth doesn’t go unnoticed

Illusionary Mask [Beta Edition] Torment Fists of the Gadgets introducesSet: Beta Edition Type: Artifact Rarity: Rare Cost: {2} {X}: You may choose a creature card in your hand whose mana cost could be paid by some amount of, or all of, the mana you spent on {X}. If you do, you may cast that card face down as a 2 2 creature spell without paying its mana cost. If the creature that spell becomes as it resolves has not been turned face up and would assign or deal damage, be dealt damage, or become tapped, instead it's turned