Lavaclaw Reaches's last ability by paying ({1} magic symbol) ({B} magic symbol) ({R} magic symbol) , causing it to become a 2/2 Elemental creature with a new ability until end of turn.
Activate that new ability by paying ({0} magic symbol) .
Ceaseless Searblades triggers, getting +1/+0 until end of turn.
Resolve
Lavaclaw Reaches's ability, having no effect.
Repeat from step 2.
Results
Infinitely powerful creature until end of turn.
Metadata
In 23 decks according to EDHREC.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).