Meekstone [Kaladesh Inventions]Set: Kaladesh Inventions Type: Artifact Rarity: Mythic Cost: {1} Creatures with power 3 or greater don't untap during their controllers' untap steps. "When it oscillated above a particular frequency, the stone induced acute listlessness in several researchers." Consulate engineer's log

Gaea forged her soldiers into self-wielding weapons that struck down all impurities

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Set: Oversize Cards Rarity: Rare Tap to add mana of any color to your mana pool

Then they put the exiled cards on the bottom of their library in a random order

you may exile it

Set: Sun & Moon: Black Star Promos Type: Psychic Rarity: Black Star Promo Retreat cost: Colorless

Set: Unlimited Edition Type: Artifact Rarity: Uncommon Cost: {1} You have no maximum hand size

While it possesses potent venom

Set: Nintendo: Black Star Promos Type: Grass Rarity: Promo Retreat cost: 1

Is it my gluttonous lust for power

Set: Diamond & Pearl: Secret Wonders Type: Psychic Rarity: Holo Rare Retreat cost: Colorless

or triggered ability