Koskun Falls [Homelands]Set: Homelands Type: World Enchantment Rarity: Rare Cost: {2}{B}{B} At the beginning of your upkeep, sacrifice Koskun Falls unless you tap an untapped creature you control. Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

something loathsome was cooking

Set: Legends Type: Artifact Rarity: Rare Cost: {6} At the beginning of your upkeep

but for reasons known only to the two of them neither acknowledges the other—or their strained relationship

that creature gets +1/+1 until end of turn

It can't be regenerated

−3: Target creature gets +X/+X or -X/-X until end of turn

" —Toshiro Umezawa

Whenever a land enters the battlefield under your control

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you

add {B} for each charge counter on Black Market

and up to one without

Set: Arabian Nights Type: Sorcery Rarity: Rare Cost: {W}{W} Players play a Magic subgame