Mox Opal (179) [Scars of Mirrodin]Set: Scars of Mirrodin Type: Legendary Artifact Rarity: mythic Cost: {0} Metalcraft {T}: Add one mana of any color. Activate only if you control three or more artifacts.

then reveals the top card of their library

Gideon becomes a 5/5 Human Soldier Ally creature with indestructible that's still a planeswalker

Set: World Championship Promos Type: Creature — Human Barbarian Rarity: rare Cost: {2}{R}{R} When this creature enters

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

Set: Delta Species Rarity: Holo Rare

Discard a card: Create a 2/2 white and blue Knight creature token with vigilance

Set: The Brothers' War Retro Artifacts Type: Artifact Rarity: uncommon Cost: {2} When this artifact enters or is put into a graveyard from the battlefield

III — Create a 3/3 black Wraith creature token with menace

(The next time this creature would be destroyed this turn

Set: Secret Lair Drop Type: Legendary Creature — Tiefling Druid Rarity: rare

Set: Ikoria: Lair of Behemoths Promos Type: Land — Plains Swamp Forest Rarity: rare ({T}: Add {W}

Set: Amonkhet Invocations Type: Enchantment Rarity: special Cost: {1}{B}{B} {B}