The Brothers' War

Involuntary Cooldown | Sorcery | | Tap up to two target artifacts and/or creatures. Put two stun counters on each of them. (If a permanent with a stun counter would become untapped, remove one from it instead.) | Eelis Kyttanen

Fateful Handoff | Sorcery | | Draw cards equal to the mana value of target artifact or creature you control. An opponent gains control of that permanent. | Gaboleps

Sibling Rivalry | Sorcery | | Gain control of target artifact or creature until end of turn. Untap it. It gains haste until end of turn. Create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.") | Rovina Cai

Fade from History | Sorcery | | Each player who controls an artifact or enchantment creates a 2/2 green Bear creature token. Then destroy all artifacts and enchantments. | Alessandra Pisano

Shoot Down | Sorcery | | Exile target artifact, enchantment, or creature with flying. | Lius Lasahido