Armageddon Clock [Revised Edition] Hydra Avatar Sacrifice another Orc or Goblin:

Sacrifice another Orc or Goblin: Other Orc creatures get +1/+1 until end of turn

Set: Coldsnap Type: Snow Land Rarity: Rare {T}: Add {C}

Set: Core Set 2019 Prerelease Promos Type: Legendary Planeswalker — Sarkhan Rarity: Mythic Cost: {1}{R}{R} +1: You may discard a card

Set: Alpha Edition Type: Enchantment — Aura Rarity: Uncommon Cost: {B} Enchant land

Sacrifice a Saproling: Add one mana of any color

Armageddon Clock [Revised Edition] Hydra Avatar Sacrifice another Orc or Goblin:Set: Revised Edition Type: Artifact Rarity: Rare Cost: {6} At the beginning of your upkeep, put a doom counter on Armageddon Clock. At the beginning of your draw step, Armageddon Clock deals damage equal to the number of doom counters on it to each player. {4}: Remove a doom counter from Armageddon Clock. Any player may activate this ability but only during any upkeep step.