plus the cost of the creature that earthbends available.
Steps
Cast the earthbending creature by paying its mana cost.
When you cast that spell, you lose 1 life and create a 2/2 artifact creature token.
The earthbending creature enters as an artifact land creature due to
Biotransference and
Toph.
When that creature enters, it earthbends, causing itself to become a land creature with haste, putting at least one +1/+1 counter on itself, and creating a delayed triggered ability.
Activate
Phantom Train by sacrificing that creature.
When that creature dies, the delayed ability from step 4 triggers, causing it to return to the battlefield tapped as an artifact land creature.
Repeat from step 3 any number of times.
Resolve all activated abilities from
Phantom Train.
Results
Infinite +1/+1 counters on a creature.
Infinite creature ETB.
Infinite creature LTB.
Infinite death triggers.
Infinite landfall triggers.
Infinite creature sacrifice triggers.
Infinite artifact ETB.
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.