The Brothers' War

Union of the Third Path | Instant | | Draw a card, then you gain life equal to the number of cards in your hand. | Robin Olausson

Stern Lesson | Instant | | Draw two cards, then discard a card. Create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.") | Lie Setiawan

Urza's Rebuff | Instant | | Choose one — • Counter target spell. • Tap up to two target creatures. | Josu Hernaiz

Moment of Defiance | Instant | | Target creature gets +2/+1 and gains lifelink until end of turn. Draw a card. | Inkognit

Fog of War | Instant | | You gain 1 life for each creature on the battlefield. Prevent all combat damage that would be dealt this turn by creatures with power 3 or less. | Josu Hernaiz

Wasteful Harvest | Instant | | Mill five cards. You may put a permanent card from among the cards milled this way into your hand. (To mill a card, put the top card of your library into your graveyard.) | Alex Stone