Rukarumel on the battlefield with "Sliver" chosen.
Steps
Cast
Phyrexian Walker by paying ({0} magic symbol) , and choosing to pay its replicate cost an arbitrarily large number of times by paying ({0} magic symbol) .
Phyrexian Walker triggers, creating a copy of it for each time its replicate cost was paid.
Resolve all
Phyrexian Walker spells, causing the nontoken
Phyrexian Walker to enter the battlefield, and creating a token copy of it for each time its replicate cost was paid.
Results
Infinite ETB.
Infinite creature tokens.
Metadata
In 13 decks according to EDHREC.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).