FlyingCreatures you control have "Whenever this creature becomes the target of a spell or ability, reveal the top card of your library. If it's a land card, put it onto the battlefield. Otherwise, put it into your hand. This ability triggers only twice each turn."
You get (three energy counters), then you may pay any amount of .Each player may exile their hand and draw a number of cards equal to the amount of paid this way. If seven or more was paid this way, you may play cards you own exiled this way until the end of your next turn.
You may have Estrid's Invocation enter as a copy of an enchantment you control, except it has "At the beginning of your upkeep, you may exile this enchantment. If you do, return it to the battlefield under its owner's control."
When Breya, Etherium Shaper enters, create two 1/1 blue Thopter artifact creature tokens with flying., Sacrifice two artifacts: Choose one —• Breya deals 3 damage to target player or planeswalker.• Target creature gets -4/-4 until end of turn.• You gain 5 life.
Prototype — 2/2 (You may cast this spell with different mana cost, color, and size. It keeps its abilities and types.)Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Whenever another nontoken creature you control enters, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
Whenever another creature you control enters, Molten Gatekeeper deals 1 damage to each opponent.Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)
Whenever an opponent casts a spell, you may reveal the top card of your library. If you do, you may cast that card without paying its mana cost if the two spells have the same mana value.
Affinity for artifacts (This spell costs less to cast for each artifact you control.)FlyingWhen Refurbished Familiar enters, each opponent discards a card. For each opponent who can't, you draw a card.
Emerge from artifact (You may cast this spell by sacrificing an artifact and paying the emerge cost reduced by that artifact's mana value.)When Crabomination enters, target opponent exiles the top card of their library, a card at random from their graveyard, and a card at random from their hand. You may cast a spell from among cards exiled this way...
Emerge from artifact (You may cast this spell by sacrificing an artifact and paying the emerge cost reduced by that artifact's mana value.)When Crabomination enters, target opponent exiles the top card of their library, a card at random from their graveyard, and a card at random from their hand. You may cast a spell from among cards exiled this way...
Noncreature spells you cast from exile have convoke. (Each creature you tap while casting a noncreature spell from exile pays for or one mana of that creature's color.)At the beginning of your first main phase, you may discard a card. If you do, exile the top two cards of your library, then choose one of them. You may play that card this turn.
: Add . Barbarian Ring deals 1 damage to you.Threshold — , , Sacrifice Barbarian Ring: It deals 2 damage to any target. Activate only if seven or more cards are in your graveyard.
Whenever another nontoken permanent you control leaves the battlefield, choose one that hasn't been chosen this turn. Create a creature token with those characteristics.• 2/2 white Fox with vigilance.• 1/2 blue Moonfolk with flying.• 1/1 black Rat with lifelink.: Put a +1/+1 counter on each creature you control.
Devoid (This card has no color.)Exile target nonland permanent. You may cast that card for as long as it remains exiled, and you may spend colorless mana as though it were mana of any color to cast that spell.
When Rosheen, Roaring Prophet enters, mill six cards. You may put a card with in its mana cost from among them into your hand.: Reveal any number of cards with in their mana cost in your hand. Add for each card revealed this way. Spend this mana only on costs that contain .
Choose one —• Thraben Charm deals damage equal to twice the number of creatures you control to target creature.• Destroy target enchantment.• Exile any number of target players' graveyards.
Devoid (This card has no color.)Whenever you cast a creature spell with mana value 4, 5, or 6, create two 0/1 colorless Eldrazi Spawn creature tokens with "Sacrifice this creature: Add ."Whenever you cast a creature spell with mana value 7 or greater, draw three cards.
Affinity for artifacts (This spell costs less to cast for each artifact you control.)When Imskir Iron-Eater enters, you draw X cards and you lose X life, where X is half the number of artifacts you control, rounded down., Sacrifice an artifact: Imskir deals damage equal to the sacrificed artifact's mana value to any target.
