Karn, Legacy Reforged - [Etched Foil] March of the Machine: The Aftermath (MAT)Karn, Legacy Reforged's power and toughness are each equal to the greatest mana value among artifacts you control. At the beginning of your upkeep, add {C} for each artifact you control. This mana can't be spent to cast nonartifact spells. Until end of turn, you don't lose this mana as steps and phases end.

the death of a sea

Skulls for the Skull Throne

This one expects some in return

Protection from monocolored

If there are ten or more creature cards total in all graveyards

its controller creates a 3/3 green Elephant creature token

Whenever another multicolored creature you control dies

Exile Blood for the Blood God

then draw three cards

Strive — This spell costs {1}{W} more to cast for each target beyond the first

You gain 2 life for each permanent sacrificed this way

where X is that card's mana value