Fijiteki Elementalist

At any time, you may switch Fijiteki
Elementalist's colors to blue until end of turn.
Whenever you change Fijiteki Elementalist's
colors, choose one —
• You may play target card from your graveyard
until end of turn.
• You may activate target permanent's ability or
effect without paying its cost or triggering it.
• Each player sacrifices an artifact.