Aetherdrift

Mindspring Merfolk | Creature | Merfolk Wizard | Exhaust — {X}{U}{U}, {T}: Draw X cards. Put a +1/+1 counter on each Merfolk creature you control. (Activate each exhaust ability only once.) | Andreia Ugrai

Vnwxt, Verbose Host | Legendary Creature | Homunculus | Start your engines! (If you have no speed, it starts at 1. It increases once on each of your turns when an opponent loses life. Max speed is 4.) You have no maximum hand size. Max speed — If you would draw a card, draw two cards instead. | Izzy

Waxen Shapethief | Creature | Shapeshifter | Flash You may have this creature enter as a copy of an artifact or creature you control. Cycling {2} ({2}, Discard this card: Draw a card.) | Helge C. Balzer

Mendicant Core, Guidelight | Legendary Artifact Creature | Robot | Mendicant Core's power is equal to the number of artifacts you control. Start your engines! (If you have no speed, it starts at 1. It increases once on each of your turns when an opponent loses life. Max speed is 4.) Max speed — Whenever you cast an artifact spell, you may pay {1}. If you do, copy it. (The copy becomes a token.) | Zezhou Chen

Winter, Cursed Rider | Legendary Creature | Human Warlock | Ward—Pay 2 life. Artifacts you control have "Ward—Pay 2 life." Exhaust — {2}{U}{B}, {T}, Exile X artifact cards from your graveyard: Each other nonartifact creature gets -X/-X until end of turn. (Activate each exhaust ability only once.) | Daren Bader

Captain Howler, Sea Scourge | Legendary Creature | Shark Pirate | Ward—{2}, Pay 2 life. Whenever you discard one or more cards, target creature gets +2/+0 until end of turn for each card discarded this way. Whenever that creature deals combat damage to a player this turn, you draw a card. | Mirko Failoni

Fearless Swashbuckler | Creature | Fish Pirate | Haste Vehicles you control have haste. Whenever you attack, if a Pirate and a Vehicle attacked this combat, draw three cards, then discard two cards. | Konstantin Porubov

Sita Varma, Masked Racer | Legendary Creature | Human Rogue | Exhaust — {X}{G}{G}{U}: Put X +1/+1 counters on Sita Varma. Then you may have the base power and toughness of each other creature you control become equal to Sita Varma's power until end of turn. (Activate each exhaust ability only once.) | Kai Carpenter