There are at least three additional counters of any kind on
Tayam and/or additional creatures you control.
Mana Needed
available.
Steps
Activate
Ashnod's Altar by sacrificing
Grim Initiate, adding .
When
Grim Initiate dies, it triggers, creating a 0/0 creature token with a +1/+1 counter on it as well as a vigilance counter due to
Tayam.
Activate [[
Tayam]] by paying and removing three counters from creatures you control, milling three cards and returning
Grim Initiate from your graveyard to the battlefield with a vigilance counter on it.
Declare that you are activating
Tayam's ability again, so state-based actions will not be checked until the ability is activated.
While paying that ability's cost, activate the creature token using the
Wall of Roots mana ability from
Agatha's Soul Cauldron by putting a -0/-1 counter on it, adding .
Complete the activation by paying and removing a vigilance counter and a -0/-1 counter from the creature token and a vigilance counter from
Grim Initiate.
Holding priority, activate
Ashnod's Altar twice by sacrificing
Grim Initiate and the creature token, adding .
When
Grim Initiate dies, it triggers, creating a 0/0 creature token with a +1/+1 counter on it as well as a vigilance counter due to
Tayam.
Resolve
Tayam's ability, milling three cards and returning
Grim Initiate from your graveyard to the battlefield with a vigilance counter on it.
Repeat from step 4.
Notes
This order of operations (and the additional starting mana) are necessary because you must activate mana abilities before paying costs, and so you cannot use
Ashnod's Altar to get mana from the creature you need to remove counters from.
Results
Infinite creature ETB.
Infinite creature LTB.
Infinite creature sacrifice triggers.
Infinite death triggers.
Infinite self-mill.
Infinite colorless mana.
Infinite green mana.
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.