Color Identity: B

Initial Card State
- All permanents on the battlefield.
Mana Needed
- ({1} magic symbol)
if Workhorse does not have a +1/+1 counter on it available.
Steps
- Activate Workhorse by removing a +1/+1 counter from it, adding ({C} magic symbol)
. - Repeat step 1 until Workhorse does not have any +1/+1 counters on it.
- Activate Skullclamp's equip ability by paying ({1} magic symbol)
, attaching it to Workhorse. - Workhorse dies as a state-based action due to having zero toughness, triggering its undying ability and Skullclamp.
- Resolve the Workhorse trigger, returning it from your graveyard to the battlefield with five +1/+1 counters on it.
- Resolve the Skullclamp trigger, causing you to draw two cards.
- Repeat.
Results
- Infinite card draw.
- Infinite draw triggers.
- Near-infinite colorless mana.
- Near-infinite death triggers.
- Near-infinite ETB.
- Near-infinite LTB.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).