Silent Arbiter [Commander 2020]Set: Commander 2020 Type: Artifact Creature Construct Rarity: Rare Cost: {4} No more than one creature can attack each combat. No more than one creature can block each combat. Scholars say that arbiters exist on every world, created by an unknown hand to enforce justice.

Set: Legends Type: Enchantment Rare Cost: {2}{W}{W} Whenever a Mountain an opponent controls becomes tapped

Set: Kaladesh Inventions Type: Artifact Creature — Construct Rarity: Mythic Cost: {4}{B}{B} Menace

at dusk to prevent the same injury from happening again

Set: Core Set 2020 Promos Type: Legendary Creature — Elemental Horror Rarity: Mythic Cost: {2}{B}{G}{U} Deathtouch

"show and tell" too often becomes "run and hide

{T}: Destroy target black permanent

Nonland permanents you control are white

Set: Magic 2010 Type: Creature — Hydra Rarity: Mythic Cost: {X}{G} Protean Hydra enters the battlefield with X +1/+1 counters on it

"With a few minor adjustments

attributed to Drafna

Set: Apocalypse Type: Creature — Dwarf Rarity: Common Cost: {R} {R}

Left unchecked