Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)
Flying
Seraph of the Masses's power and toughness are each equal to the number of creatures you control.

You may cast this spell as though it had flash if you pay more to cast it. (You may cast it any time you could cast an instant.)
Destroy all creatures. They can't be regenerated.

Whenever you attack, spells you cast from exile this turn cost less to cast, where X is the number of players being attacked. Exile the top X cards of your library. Until end of turn, you may cast spells from among those exiled cards.

As long as your life total is greater than or equal to your starting life total, creatures you control get +1/+1.
Whenever one or more creatures you control attack, you gain life equal to the number of attacking creatures.

Spree (Choose one or more additional costs.)
+ — Destroy target artifact.
+ — Destroy target enchantment.
+ — Put a +1/+1 counter on each creature target player controls.

Destroy target artifact or enchantment.

, : Exile another target creature you control, then return that card to the battlefield under your control.

Enchant creature
When this Aura enters, you gain 3 life.
Enchanted creature gets +1/+3.

This creature can't block creatures with power 2 or greater.

Scry X, where X is the amount of spent to cast this spell, then draw three cards. ( is mana from a snow source.)

Whenever you cast a spell, you may put it on the bottom of its owner's library. If you do, reveal cards from the top of your library until you reveal a nonland card. You may cast that card without paying its mana cost. Then put all revealed cards not cast this way on the bottom of your library in a random order. This ability triggers only once each turn.

Menace (This creature can't be blocked except by two or more creatures.)
Whenever a Samurai or Warrior you control attacks alone, the next spell you cast this turn costs less to cast.

, Sacrifice this creature: Destroy target face-down creature.

This spell costs more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.

All creatures get -2/-2 until end of turn. Exile all creature cards in all graveyards that were put there from the battlefield this turn. If a creature would die this turn, exile it instead.

, Sacrifice this enchantment: Add .

At the beginning of your upkeep, if you control six or more lands, create a 5/5 red Dragon creature token with flying.

When you cast this spell, you gain 1 life for each colorless permanent you control.
Hexproof from each color
Annihilator 2 (Whenever this creature attacks, defending player sacrifices two permanents of their choice.)

(: Add .)