Walking Ballista by paying , causing it to enter the battlefield with a +1/+1 counter on it.
Activate
Together Forever by paying , targeting
Walking Ballista.
Activate
Ashnod's Altar by sacrificing
Walking Ballista, adding .
When
Walking Ballista dies,
Together Forever triggers, returning
Walking Ballista from your graveyard to your hand.
Repeat.
Notes
If you control an additional artifact, this combo will net infinite colorless mana, and you will pay in step 1. Once you have infinite mana, you can use it to cast
Walking Ballista, and then remove counters from it to deal damage.
Results
Infinite creature LTB.
Infinite creature ETB.
Infinite creature sacrifice triggers.
Infinite death triggers.
Infinite storm count.
Infinite colorless mana.
Infinite damage.
Infinite +1/+1 counters on a creature.
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.