Casey & Raph by paying ({1} magic symbol) ({U} magic symbol) , blinking it.
When
Casey & Raph enters, it and
Deadeye Navigator's soulbond ability trigger.
Resolve the
Casey & Raph trigger, creating two Treasure tokens.
Resolve the
Deadeye Navigator trigger, repairing it and
Casey & Raph.
Activate the Treasures by tapping and sacrificing them, adding ({1} magic symbol) ({U} magic symbol) .
Repeat.
Notes
You can optionally have an opponent exile the top card of their library in step 3 using
Casey & Raph's other mode. This does allow them to cast it for free, which may allow them access to pieces that will disrupt the combo (such as a removal spell).
Results
Infinite artifact ETB.
Infinite artifact LTB.
Infinite artifact sacrifice triggers.
Exile each opponent's library.
Infinite creature ETB.
Infinite creature LTB.
Metadata
In 19 decks according to EDHREC.
Bracket Tag
This combo has been estimated to be Ruthless (Bracket 4+).