
Windcrag Siege | Enchantment | | As this enchantment enters, choose Mardu or Jeskai.
• Mardu — If a creature attacking causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.
• Jeskai — At the beginning of your upkeep, create a 1/1 red Goblin creature token. It gains lifelink and haste until end of turn. | Néstor Ossandón Leal

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

New Way Forward | Instant | | The next time a source of your choice would deal damage to you this turn, prevent that damage. When damage is prevented this way, New Way Forward deals that much damage to that source's controller and you draw that many cards. | Eli Minaya

Rediscover the Way | Enchantment | Saga | (As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I, II — Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.
III — Whenever you cast a noncreature spell this turn, target creature you control gains double strike until end of turn. | Clint Lockwood

Inevitable Defeat | Instant | | This spell can't be countered.
Exile target nonland permanent. Its controller loses 3 life and you gain 3 life. | Cristi Balanescu

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

Thunder of Unity | Enchantment | Saga | (As this Saga enters step, add a lore counter. Sacrifice after III.)
I — You draw two cards and you lose 2 life.
II, III — Whenever a creature you control enters this turn, each opponent loses 1 life and you gain 1 life. | Clint Lockwood

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