Color Identity: W

Initial Card State
- All permanents on the battlefield.
Notable Prerequisites
- Halo Fountain does not have summoning sickness.
Mana Needed
- ({1} magic symbol)
({W} magic symbol)
available.
Steps
- Activate Karn by paying ({1} magic symbol)
, causing Halo Fountain to become an artifact creature until end of turn. - Activate Halo Fountain's first ability by paying ({W} magic symbol)
, tapping it and untapping it, creating a 1/1 Citizen creature token. - Activate Phyrexian Altar by sacrificing the Citizen, adding ({W} magic symbol)
. - Repeat from step 2.
Results
- Infinite death triggers.
- Infinite ETB.
- Infinite LTB.
- Infinite sacrifice triggers.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).