+mortal (20)
At the beginning of your upkeep, you may have two target players exchange life totals.
Double target player's life total. Shuffle Beacon of Immortality into its owner's library.
When Bonds of Mortality enters the battlefield, draw a card.
: Creatures your opponents control lose hexproof and indestructible until end of turn.
, : You gain 5 life. Shuffle Elixir of Immortality and your graveyard into their owner's library.
Enchant creature
When enchanted creature dies, return that card to the battlefield under its owner's control. Return Gift of Immortality to the battlefield attached to that creature at the beginning of the next end step.
Constellation — Whenever Humbler of Mortals or another enchantment enters the battlefield under your control, creatures you control gain trample until end of turn.
, Exile two cards from your graveyard: Draw a card.
If damage would be dealt to you, prevent that damage. Exile a card from your graveyard for each 1 damage prevented this way.
When there are no cards in your graveyard, you lose the game.
Flying
When Immortal Phoenix dies, return it to its owner's hand.
Return each creature card with converted mana cost X from your graveyard to the battlefield.
Maga, Traitor to Mortals enters the battlefield with X +1/+1 counters on it.
When Maga enters the battlefield, target player loses life equal to the number of +1/+1 counters on it.
At the beginning of your upkeep, if twenty or more creature cards are in your graveyard, you win the game.
Enchant creature you control
Enchanted creature gets +1/+1.
Whenever enchanted creature deals combat damage to a player, you may sacrifice Mortal Obstinacy. If you do, destroy target enchantment.
When enchanted creature is dealt damage, destroy it.
Target creature gets +1/+1 and gains lifelink until end of turn. (Damage dealt by the creature also causes its controller to gain that much life.)
Target creature gets +1/+1 and gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)
This spell costs less to cast for each creature card in your graveyard.
: Monstrosity 5. This ability costs less to activate for each creature card in your graveyard. (If this creature isn't monstrous, put five +1/+1 counters on it and it becomes monstrous.)
, : Counter target instant or Aura spell that targets a permanent you control.
You may cast Squee, the Immortal from your graveyard or from exile.
Tempting offer — Return a creature card from your graveyard to the battlefield. Each opponent may return a creature card from their graveyard to the battlefield. For each opponent who does, return a creature card from your graveyard to the battlefield.
Players can't activate planeswalkers' loyalty abilities.
At the beginning of your draw step, draw an additional card.
Spells you cast cost less to cast.
Creatures you control get +1/+1.
, Exile two cards from your graveyard: Draw a card.