This creature can't be blocked. When this creature enters, you gain 4 life. When this creature enters, sacrifice it unless {U} was spent to cast it.

Flying Whenever this creature attacks, you may tap target creature.

The next time target creature would deal damage this turn, prevent that damage. You gain life equal to the damage prevented this way.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) Prevent all damage that would be dealt by creatures this turn. You gain life equal to the damage prevented this way.

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

Prevent all combat damage that would be dealt this turn by attacking creatures.

Whenever you cast a Spirit or Arcane spell, regenerate target creature.

Sacrifice this creature: Prevent all combat damage that would be dealt this turn.

Flying {1}{U}: Return target Spirit you control to its owner's hand.

When this enchantment enters, create a 1/1 white Spirit creature token with flying. Morbid — At the beginning of your end step, if a creature died this turn, populate. (Create a token that's a copy of a creature token you control.)

Flash Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Flying Other white creatures get +1/+1.

Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.) Other Spirits you control have melee. Prevent all noncombat damage that would be dealt to Spirits you control.

Flying Other Spirit creatures you control get +0/+1.

Creatures you control get +0/+1. Morph {1}{W} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

({T}: Add {U}.)

{T}: Add {C}. {W}{U}, {T}, Exile a creature card from your graveyard: Create a 1/1 white Spirit creature token with flying.

Flying At the beginning of your upkeep, return target Spirit card from your graveyard to your hand.

Flying When this creature enters, if you control another Spirit, you gain 3 life.

Flash When this creature enters, other creatures you control get +0/+1 until end of turn.

Flying {3}{W}: Exile this creature, then return it to the battlefield under its owner's control.

{W}, {T}, Discard a card: Creatures you control get +1/+0 until end of turn.

{T}: Target creature gets +1/+1 until end of turn.

{1}: Look at the top card of your library. {2}: Reveal the top card of your library. If it's a land card, untap this creature and it gets +1/+1 until end of turn. Activate only once each turn.

{W}, {T}: Tap target creature. Whenever you cast a Spirit or Arcane spell, untap this creature.

Flying {T}: Target creature gets +1/+2 until end of turn.

{W}: Regenerate this creature.

Creatures your opponents control enter tapped. Whenever a creature an opponent controls enters, you gain 1 life.

You gain 2 life for each creature target player controls. Suspend 5—{1}{W} (Rather than cast this card from your hand, you may pay {1}{W} and exile it with five time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.)

{W}, {T}: You gain 2 life. Channel — {1}{W}, Discard this card: You gain 4 life.

Flying Whenever this creature is dealt damage, you gain that much life. Soulshift 6 (When this creature dies, you may return target Spirit card with mana value 6 or less from your graveyard to your hand.)

Exile target artifact or enchantment.

As an additional cost to cast this spell, sacrifice a permanent. Exile target artifact, creature, or enchantment.

Destroy target artifact or enchantment.

Destroy target artifact. You gain life equal to its mana value.

Destroy target attacking or blocking creature.

Flying When this creature enters, create a 1/1 white Spirit creature token with flying. {3}{W}, Exile this creature: Exile target creature.

Destroy target attacking creature.

Enchant creature, land, or planeswalker Enchanted permanent is a colorless land with "{T}: Add {C}" and loses all other card types and abilities.

Sacrifice this creature: Destroy target enchantment.

Counter target spell unless its controller pays {1}.

When this creature enters, destroy target enchantment. Whenever you cast a Spirit or Arcane spell, you may return this creature to its owner's hand.

Flash When this creature dies, if it's not a Spirit, return it to the battlefield under its owner's control with four charge counters on it. It's a Spirit Detective. (It's no longer a Human.) {1}{W}, {T}, Remove a charge counter from this creature: Destroy target creature that dealt damage to you this turn.

Enchant artifact or creature Enchanted permanent can't attack or block, and its activated abilities can't be activated.

Exile target creature that dealt damage to you this turn.

Enchant creature Enchanted creature can't attack or block. At the beginning of your upkeep, you may gain 1 life.

Flying Sacrifice this creature: Exile target player's graveyard.

Return target creature to its owner's hand. Flashback {4}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Destroy target blocked creature.

Defender (This creature can't attack.) {1}{U}, Sacrifice this creature: Counter target creature spell.

Counter target spell unless its controller pays {X}. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Flying Whenever you cast a creature spell with mana value 3 or less, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")

You gain X life and draw X cards.