Oko by paying , causing it to enter the battlefield with six loyalty counters due to
Vorinclex.
Cast
Spark Double by paying , choosing to have it enter the battlefield as a nonlegendary copy of
Oko, and to enter the battlefield with eight loyalty counters due to
Vorinclex.
Activate an
Oko's third loyalty ability by removing five loyalty counters from it, causing you to create two token copies of each other nonland permanent you control.
If you created any legenedary tokens this way, put all but one of them into your graveyard due to the legend rule.
Repeat from step 3 using a different
Oko.
Once you have infinite
Oko tokens, you may instead activate
Oko's other abilities.
Results
Infinite copies of nonland permanents you control.
Infinite creature tokens.
Infinite draw triggers.
Infinite looting.
Infinite self-discard triggers.
Near-infinite card draw.
Metadata
Bracket tag
OddballBracket 2-3+
Probably 2 or 3, but hard to classify
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.