There are three removable counters on creatures you control if
Colonel Autumn is in your graveyard.
Mana Needed
if
Colonel Autumn is in your hand, or if its in your graveyard available.
Steps
Cast
Colonel Autumn by paying if its in your hand. Otherwise, activate
Tayam by paying and removing three counters from creatures you control, causing you to mill three cards and return
Colonel Autumn from your graveyard to the battlefield with a vigilance counter on it.
When
Colonel Autumn enters the battlefield, it triggers, exploiting itself and triggering its ability, putting a +1/+1 counter on each creature you control.
Basking Broodscale triggers, creating a 0/1 Eldrazi Spawn creature token that enters with a vigilance counter on it.
Activate
Cryptic Trilobite by removing a +1/+1 counter from it, adding that can only be spent to activate abilities.
Activate the Eldrazi Spawn by sacrificing it, adding .
Repeat.
Notes
If you do not control any other creatures, you may instead activate
Tayam before sacrificing the Eldrazi Spawn, thus using the Eldrazi Spawn's vigilance counter as the third counter for activation. Doing this will add to the mana needed for the combo. This also will result in not gaining infinite +1/+1 counters.
Results
Infinite creature LTB.
Infinite creature ETB.
Infinite creature sacrifice triggers.
Infinite death triggers.
Infinite self-mill.
Infinite +1/+1 counters on most creatures you control.
Metadata
Bracket tag
ExhibitionBracket 1+
For any deck
1
2
3
4
5
1 · Exhibition5 · cEDH
Bracket tags are estimated from the cards and results of each combo, as a guideline rather than a strict classification.