Blood Tribute [Commander 2017] Black The cube's surface is pockmarked

The cube's surface is pockmarked with jagged runes that seem to shift when unobserved

you get {E} (an energy counter)

or three target creatures you control

Set: Return to Ravnica Type: Creature — Elf Shaman Rarity: Rare Cost: {B/G} {T}: Exile target land card from a graveyard

It's a helm that leaves the head at its most vulnerable

Blood Tribute [Commander 2017] Black The cube's surface is pockmarkedSet: Commander 2017 Type: Sorcery Rarity: Rare Cost: {4}{B}{B} KickerTap an untapped Vampire you control. (You may tap a Vampire you control in addition to any other costs as you cast this spell.) Target opponent loses half their life, rounded up. If this spell was kicked, you gain life equal to the life lost this way.