Kaladesh

Aetherstorm Roc | Creature | Bird | Flying Whenever Aetherstorm Roc or another creature enters the battlefield under your control, you get {E} (an energy counter). Whenever Aetherstorm Roc attacks, you may pay {E}{E}. If you do, put a +1/+1 counter on it and tap up to one target creature defending player controls. | Scott Murphy

Captured by the Consulate | Enchantment | Aura | Enchant creature you don't control Enchanted creature can't attack. Whenever an opponent casts a spell, if it has a single target, change the target to enchanted creature if able. | Tyler Jacobson

Insidious Will | Instant | | Choose one — • Counter target spell. • You may choose new targets for target spell. • Copy target instant or sorcery spell. You may choose new targets for the copy. | Anthony Palumbo

Padeem, Consul of Innovation | Legendary Creature | Vedalken Artificer | Artifacts you control have hexproof. At the beginning of your upkeep, if you control the artifact with the highest mana value or tied for the highest mana value, draw a card. | Matt Stewart

Paradoxical Outcome | Instant | | Return any number of target nonland, nontoken permanents you control to their owners' hands. Draw a card for each card returned to your hand this way. | Nils Hamm

Gonti, Lord of Luxury | Legendary Creature | Aetherborn Rogue | Deathtouch When Gonti, Lord of Luxury enters the battlefield, look at the top four cards of target opponent's library, exile one of them face down, then put the rest on the bottom of that library in a random order. You may look at and cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any type to cast that spell. | Daarken

Midnight Oil | Enchantment | | Midnight Oil enters the battlefield with seven hour counters on it. At the beginning of your draw step, draw an additional card and remove two hour counters from Midnight Oil. Your maximum hand size is equal to the number of hour counters on Midnight Oil. Whenever you discard a card, you lose 1 life. | Daniel Ljunggren

Fateful Showdown | Instant | | Fateful Showdown deals damage to any target equal to the number of cards in your hand. Discard all the cards in your hand, then draw that many cards. | Chris Rallis

Madcap Experiment | Sorcery | | Reveal cards from the top of your library until you reveal an artifact card. Put that card onto the battlefield and the rest on the bottom of your library in a random order. Madcap Experiment deals damage to you equal to the number of cards revealed this way. | Joseph Meehan

Skyship Stalker | Creature | Dragon | Flying {R}: Skyship Stalker gets +1/+0 until end of turn. {R}: Skyship Stalker gains first strike until end of turn. {R}: Skyship Stalker gains haste until end of turn. | Chris Rahn

Territorial Gorger | Creature | Gremlin | Trample Whenever you get one or more {E} (energy counters), Territorial Gorger gets +2/+2 until end of turn. | Lius Lasahido

Bristling Hydra | Creature | Hydra | When Bristling Hydra enters the battlefield, you get {E}{E}{E} (three energy counters). Pay {E}{E}{E}: Put a +1/+1 counter on Bristling Hydra. It gains hexproof until end of turn. | Chris Rahn

Dubious Challenge | Sorcery | | Look at the top ten cards of your library, exile up to two creature cards from among them, then shuffle. Target opponent may choose one of the exiled cards and put it onto the battlefield under their control. Put the rest onto the battlefield under your control. | Scott Murphy

Aetherflux Reservoir | Artifact | | Whenever you cast a spell, you gain 1 life for each spell you've cast this turn. Pay 50 life: Aetherflux Reservoir deals 50 damage to any target. | Cliff Childs

Fleetwheel Cruiser | Artifact | Vehicle | Trample, haste When Fleetwheel Cruiser enters the battlefield, it becomes an artifact creature until end of turn. Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.) | Sung Choi

Ghirapur Orrery | Artifact | | Each player may play an additional land on each of their turns. At the beginning of each player's upkeep, if that player has no cards in hand, that player draws three cards. | Kirsten Zirngibl

Panharmonicon | Artifact | | If an artifact or creature entering the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time. | Volkan Baǵa