Go-Shintai by paying ({W} magic symbol) ({U} magic symbol) ({B} magic symbol) ({R} magic symbol) ({G} magic symbol) and tapping it, returning any Shrine from your graveyard to the battlefield.
When the Shrine enters the battlefield,
Go-Shintai triggers, creating a 1/1 Shrine enchantment creature token.
When the Shrine token enters the battlefield,
Intruder Alarm triggers, untapping all creatures.
Repeat.
Results
Infinite creature tokens.
Infinite death triggers.
Infinite ETB.
Infinite LTB.
Infinitely large creature until end of turn.
Infinite mana creatures you control can produce.
Infinite sacrifice triggers.
Infinite untap of creatures.
Infinite untap of creatures you control.
Metadata
In 6 decks according to EDHREC.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).