Nissa, Resurgent Animist (Retro) [March of the Machine: The Aftermath] Phyrexian Demon Whenever Umbris or another Nightmare

Whenever Umbris or another Nightmare or Horror enters the battlefield under your control

each opponent may sacrifice a permanent that shares a card type with it

Set: Tenth Edition Type: Creature — Dragon Rarity: Rare Cost: {4}{R}{R} Flying (This creature can't be blocked except by creatures with flying or reach

{T}: Gain control of target creature with power less than or equal to Old Man of the Sea's power for as long as Old Man of the Sea remains tapped and that creature's power remains less than or equal to Old Man of the Sea's power

Nissa, Resurgent Animist (Retro) [March of the Machine: The Aftermath] Phyrexian Demon Whenever Umbris or another NightmareSet: March of the Machine: The Aftermath Type: Legendary Creature Elf Scout Rarity: Mythic Cost: {2}{G} Landfall Whenever a land enters the battlefield under your control, add one mana of any color. Then if this is the second time this ability has resolved this turn, reveal cards from the top of your library until you reveal an Elf or Elemental card. Put that card into your hand and the rest on the bottom of your library in a random order.