This spell costs less to cast, where X is your devotion to white.
Flying

Enchant creature with another Aura attached to it
Enchanted creature gets +3/+3 and has first strike, vigilance, and lifelink.

Exile target creature you control, then return that card to the battlefield under its owner's control with a +1/+1 counter on it.
Flashback

When this creature enters, create a 1/1 white Human Soldier creature token.

Flying
Whenever another creature you control enters, you gain 1 life.

Cast this spell only during the declare blockers step.
Target unblocked attacking creature becomes blocked. (This spell works on creatures that can't be blocked.)
Draw a card at the beginning of the next turn's upkeep.

Defender
, : Tap target creature.

You gain life equal to target creature's power. The next time that creature would deal damage this turn, prevent that damage.

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)
Creature spells you cast have convoke.

(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)
Untap each creature you control during each other player's untap step.

Revolt — When this creature enters, if a permanent left the battlefield under your control this turn, destroy target tapped creature an opponent controls.

Deadly Riposte deals 3 damage to target tapped creature and you gain 2 life.

Each player can't cast more than one noncreature spell each turn.

Flying
As long as this creature is in your graveyard, each Human creature you control enters with an additional +1/+1 counter on it.

Separate all creature cards in your graveyard into two piles. Exile the pile of an opponent's choice and return the other to the battlefield.

Regenerate target creature.

Flying
: Target creature gains indestructible until end of turn.

Regenerate target creature. You gain control of that creature if it regenerates this way.

Enchant land
Enchanted land has ": Tap target creature."

Exile target creature and all other creatures its controller controls with the same name as that creature. That player investigates for each nontoken creature exiled this way.

Destroy target artifact or enchantment.
Revolt — If a permanent left the battlefield under your control this turn, you gain 3 life.

Equipped creature gets +1/+1 and has ", , Sacrifice Deconstruction Hammer: Destroy target artifact or enchantment."
Equip

Flying
: Prevent the next 1 combat damage that would be dealt to you this turn.

When Dedicated Dollmaker enters, exile up to one other target nonland, nontoken permanent. Its controller creates a token that's a copy of it, except it's not legendary and it's an artifact in addition to its other types.
: Tokens you control gain indestructible until end of turn. Activate only once.

, Sacrifice this creature: You gain 3 life.

Flash
Mold Earth — Whenever one or more lands enter under an opponent's control without being played, you may search your library for a Plains card, put it onto the battlefield tapped, then shuffle. Do this only once each turn.

Enchant creature
Prevent all damage that would be dealt by enchanted creature.

Choose one —
• Creatures you control get +1/+1 until end of turn.
• Destroy target creature with power 4 or greater.

Fading 4
Remove a fade counter from this creature: Prevent the next 2 damage that would be dealt to any target this turn.