{T}: Add {C}.

{1}{U}, {T}: Put target artifact card from your graveyard on top of your library.

As Chameleon Spirit enters the battlefield, choose a color.

Chameleon Spirit's power and toughness are each equal to the number of permanents of the chosen color your opponents control.

{2}{U}: Return target white or black creature you control to its owner's hand.

You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost.

Counter target spell.

{3}: Target blue creature gains shroud until end of turn. (It can't be the target of spells or abilities.)

As Shimmer enters the battlefield, choose a land type.

Each land of the chosen type has phasing. (It phases in or out before its controller untaps during each of their untap steps. While it's phased out, it's treated as though it doesn't exist.)

Flash

When Snapcaster Mage enters the battlefield, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (You may cast that card from your graveyard for its flashback cost. Then exile it.)

Buyback {2} (You may pay an additional {2} as you cast this spell. If you do, put this card into your hand as it resolves.)

Change the text of target permanent by replacing all instances of one color word with another or one basic land type with another until end of turn. (For example, you may change "nonred creature" to "nongreen creature" or "plainswalk" to "swampwalk.")