You may discard a Plains card rather than pay this spell's mana cost.
Destroy target artifact or enchantment.

, Sacrifice Aether Spellbomb: Return target creature to its owner's hand.
, Sacrifice Aether Spellbomb: Draw a card.

Flash; 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
When Angel of Salvation enters the battlefield, prevent the next 5 damage that would be dealt this turn to any number of targets, divided as you choose.

Modular 1 (This creature enters the battlefield with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifact creature.)

Return target artifact card from your graveyard to the battlefield.

: Target Assembly-Worker creature gets +1/+1 until end of turn.

Choose one —
• Tap two target creatures.
• Creatures don't untap during target player's next untap step.
Entwine (Choose both if you pay the entwine cost.)

Flying
Reinforce 2— (, Discard this card: Put two +1/+1 counters on target creature.)

Tap five untapped Soldiers you control: Exile target creature.

Flash (You may cast this spell any time you could cast an instant.)
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.

Flying
Clockwork Condor enters the battlefield with three +1/+1 counters on it.
Whenever Clockwork Condor attacks or blocks, remove a +1/+1 counter from it at end of combat.

Clockwork Hydra enters the battlefield with four +1/+1 counters on it.
Whenever Clockwork Hydra attacks or blocks, remove a +1/+1 counter from it. If you do, Clockwork Hydra deals 1 damage to any target.
: Put a +1/+1 counter on Clockwork Hydra.

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

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.)
When Conclave Phalanx enters the battlefield, you gain 1 life for each creature you control.

When Contagion Clasp enters the battlefield, put a -1/-1 counter on target creature.
, : Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

White creatures get +1/+1.

Indestructible
: Add .

: Add .
, : Target Soldier creature gets +1/+1 until end of turn.

Return target nonland permanent and all other permanents with the same name as that permanent to their owners' hands.