
Magmatic Hellkite | Creature | Dragon | Flying
When this creature enters, destroy target nonbasic land an opponent controls. Its controller searches their library for a basic land card, puts it onto the battlefield tapped with a stun counter on it, then shuffles. (If a permanent with a stun counter would become untapped, remove one from it instead.) | Tyler Walpole

Sarkhan, Dragon Ascendant | Legendary Creature | Human Druid | When Sarkhan enters, you may behold a Dragon. If you do, create a Treasure token. (To behold a Dragon, choose a Dragon you control or reveal a Dragon card from your hand.)
Whenever a Dragon you control enters, put a +1/+1 counter on Sarkhan. Until end of turn, Sarkhan becomes a Dragon in addition to its other types and gains flying. | Billy Christian

Stadium Headliner | Creature | Goblin Warrior | Mobilize 1 (Whenever this creature attacks, create a tapped and attacking 1/1 red Warrior creature token. Sacrifice it at the beginning of the next end step.)
{1}{R}, Sacrifice this creature: It deals damage equal to the number of creatures you control to target creature. | Ralph Horsley

Tersa Lightshatter | Legendary Creature | Orc Wizard | Haste
When Tersa Lightshatter enters, discard up to two cards, then draw that many cards.
Whenever Tersa Lightshatter attacks, if there are seven or more cards in your graveyard, exile a card at random from your graveyard. You may play that card this turn. | Olivier Bernard

Flamehold Grappler | Creature | Human Monk | First strike
When this creature enters, copy the next spell you cast this turn when you cast it. You may choose new targets for the copy. (A copy of a permanent spell becomes a token.) | Wayne Wu

Narset, Jeskai Waymaster | Legendary Creature | Human Monk | At the beginning of your end step, you may discard your hand. If you do, draw cards equal to the number of spells you've cast this turn. | Randy Vargas

Mardu Siegebreaker | Creature | Human Warrior | Deathtouch, haste
When this creature enters, exile up to one other target creature you control until this creature leaves the battlefield.
Whenever this creature attacks, for each opponent, create a tapped token that's a copy of the exiled card attacking that opponent. At the beginning of your end step, sacrifice those tokens. | Chris Seaman

Zurgo, Thunder's Decree | Legendary Creature | Orc Warrior | Mobilize 2 (Whenever this creature attacks, create two tapped and attacking 1/1 red Warrior creature tokens. Sacrifice them at the beginning of the next end step.)
During your end step, Warrior tokens you control have "This token can't be sacrificed." | Steve Prescott

Eshki Dragonclaw | Legendary Creature | Human Warrior | Vigilance, trample, ward {1}
At the beginning of combat on your turn, if you've cast both a creature spell and a noncreature spell this turn, draw a card and put two +1/+1 counters on Eshki Dragonclaw. | Tran Nguyen

Songcrafter Mage | Creature | Human Bard | Flash
When this creature enters, target instant or sorcery card in your graveyard gains harmonize until end of turn. Its harmonize cost is equal to its mana cost. (You may cast that card from your graveyard for its harmonize cost. You may tap a creature you control to reduce that cost by {X}, where X is its power. Then exile the spell.) | Irina Nordsol

Temur Battlecrier | Creature | Orc Ranger | During your turn, spells you cast cost {1} less to cast for each creature you control with power 4 or greater. | Brent Hollowell