Rite of Passage
Primal Vigor
Deathbringer Thoctar

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield (Deathbringer Thoctar with a +1/+1 counter on it on the battlefield).

   Steps

How does this combo work?
1
Activate Deathbringer Thoctar by removing a +1/+1 counter from it, dealing 1 damage to itself.
2
Rite of Passage triggers, putting two +1/+1 counters on Deathbringer Thoctar.
3
Repeat an arbitrarily large number of times.
4
Move to the next turn, removing all damage marked on Deathbringer Thoctar.
5
Activate Deathbringer Thoctar by removing a +1/+1 counter from it, dealing 1 damage to any target.
6
Repeat step 5 as desired.

   Results

What do I get from this combo?
Infinite damage