Bith Mage

(This creature is arcane. You may choose a target
when this creature enters the battlefield. All spells
spliced onto this creature go toward that target.)
When Bith Mage enters the battlefield, target creature gains protection from the color of your
choice until end of turn.
Splice onto Arcane {w}{w}{w}. (Add this creature's
enter the battlefield effects to the targeted arcane spell.)