Nahiri, Forged in Fury (Extended Art) [March of the Machine: The Aftermath]

Nahiri, Forged in Fury (Extended Art) [March of the Machine: The Aftermath]Set: March of the Machine: The Aftermath Type: Legendary Creature Kor Artificer Rarity: Mythic Cost: {4}{R}{W} Affinity for Equipment (This spell costs 1 less to cast for each Equipment you control.) Whenever an equipped creature you control attacks, exile the top card of your library. You may play that card this turn. You may cast Equipment spells this way without paying their mana costs.

1x Alt-Art Arcane Signet

Set: Commander 2021 Type: Legendary Creature — Efreet Wizard Rarity: Mythic Cost: {1}{U}{R} Magecraft — Whenever you cast or copy an instant or sorcery spell

Set: Beta Edition Type: Artifact Rarity: Rare Cost: {1} Creatures with power 3 or greater don't untap during their controllers' untap steps

convert Optimus Prime

Set: Ultimate Masters Type: Legendary Creature — Eldrazi Rarity: Mythic Cost: {10} When you cast this spell

Set: Dungeons & Dragons: Adventures in the Forgotten Realms Commander Type: Legendary Creature — Beholder Rarity: Mythic Cost: {3}{B}{R} Whenever you attack a player

Creatures the active player controls attack this turn if able

or should I place it near my opponent instead

Set: Portal Three Kingdoms Type: Instant Rarity: Uncommon Cost: {1}{U}{U} Counter target creature or sorcery spell

Mayhem Dominus

Set: Arabian Nights Type: Creature — Human Rarity: Rare Cost: {1}{W} Protection from red

Set: Revised Edition Type: Sorcery Rarity: Rare Cost: {2}{W}{W} Destroy all creatures