Will Kenrith with two or more loyalty counters on it).
Easy Prerequisites
Your deck size is at least 2.
Mana Needed
({U} magic symbol) available.
Steps
Activate
Will Kenrith's second loyalty ability by removing two loyalty counters from it, causing you to draw two cards and causing instant, sorcery and planeswalker spells you cast to cost ({2} magic symbol) less to cast until your next turn.
Cast
Whim of Volrath by paying ({U} magic symbol) due to
Will Kenrith.
Namor triggers, creating a 1/1 Merfolk creature token.
Resolve
Whim of Volrath.
Activate
Phyrexian Altar by sacrificing the Merfolk, adding ({U} magic symbol) .
Repeat from step 2.
Results
Infinite ETB.
Infinite LTB.
Infinite death triggers.
Infinite magecraft triggers.
Infinite sacrifice triggers.
Infinite storm count.
Metadata
In 0 decks according to EDHREC.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).