Prerequisites
- Skeleton Ship on the battlefield
- Intruder Alarm on the battlefield
- Geralf's Messenger on the battlefield
- Phyrexian Altar on the battlefield
- Skeleton Ship does not have summoning sickness
- Geralf's Messenger does not have any +1/+1 counters
Steps
- Activate Phyrexian Altar by sacrificing Geralf's Messenger, adding one mana of any color
- Geralf's Messenger dies, triggering its undying ability, returning it from your graveyard to the battlefield with a +1/+1 counter on it
- Geralf's Messenger enters the battlefield, triggering itself and Intruder Alarm
- Resolve the Geralf's Messenger trigger, causing an opponent to lose 2 life
- Resolve the Intruder Alarm trigger, untapping all creatures
- Activate Skeleton Ship by tapping it, putting a -1/-1 counter on Geralf's Messenger
- Repeat
Results
- Infinite colored mana
- Infinite death triggers
- Infinite ETB
- Infinite lifeloss
- Infinite LTB
- Infinite mana creatures you control can produce
- Infinite sacrifice triggers
- Infinite untap of all creatures
Required Cards 4
Skeleton Ship
Legendary Creature — Skeleton
Geralf's Messenger
Creature — Zombie