Darkrai (BW73) (Jumbo Card) [Black & White: Black Star Promos]Set: Black & White: Black Star Promos Type: Colorless Rarity: Promo Retreat cost: Colorless,Colorless

"/ —Samuel Coleridge

Set: Judge Gift Cards 2020 Type: Legendary Land Rarity: Rare Colorless Eldrazi spells you cast cost {2} less to cast

" —Golran

Set: Beta Edition Type: Enchantment Rarity: Uncommon Cost: {U}{U} Whenever a Forest an opponent controls becomes tapped

If the player does

Sliver spells you cast have cascade

Whenever Kroxa enters the battlefield or attacks

sacrifice it unless you sacrifice any number of creatures with total power 12 or greater

Shatterskull Pass is a pretty distant second

Set: Modern Horizons Type: Artifact Rarity: Mythic Suspend 3—{0} (Rather than cast this card from your hand

Set: Black & White: Emerging Powers Type: Fighting Rarity: Holo Rare Retreat cost: Colorless

Set: Magic 2011 Type: Artifact Creature — Angel Rarity: Mythic Cost: {7} Flying