Copy of: CleanBelwas' Skeleton Ship (EDH / Commander)

Skeleton Ship / Nest of Scarabs / Intruder Alarm
This combo allows us to keep our opponents boards clear of creatures. Tap the ship, put a -1/-1 counter on a creature, create a scarab from the nest, untap the ship thanks to intruder alarm, repeat.

Skeleton Ship / Sac Outlet / Untapper / Undying Creature
Undying creatures seem like a fun combo piece in this deck. How this combo looks to win will depend entirely on which of the cards you draw for each category. Some of the combos require specific components. For example, if your untapper is Freed from the Real or Pemmin's Aura, the sac outlet needs to be Phyrexian Altar. However, if we have Intruder Alarm (which is a real big player in this deck) we can do all sorts of shenanigans.
Mill people with Altar of Dementia, make an arbitrarily large Fallen Angel (which is such a good card in a really boring way. Add in a whispersilk cloak for good measure). With Mikaeus out, we can use our utility creatures like Baleful Strix or Mulldrifter to draw our entire deck, or Ravenous Chupacabra to wipe our opponents boards. We have infinite death triggers for Blood Artist. We can mill or drain folk with Geralf's undying brigade. We've got Mike so we may as well have Trike too.

Skeleton Ship / Aphetto Alchemist / Gilded Lotus / Freed from the Real or Pemmin's Aura or Illusionist's Bracers
Infinite mana and infinite untaps. With some Capsize or Skeleton Ship you've got a clear board, always. Codex Shredder lets you either grab an important piece from your grave or infinite mill as an outlet for this combo. Happy tappin'!