Preston, the Vanisher
Ashnod's Altar
Chord of Calling
Wormfang Drake

   Prerequisites

What do I need to start this combo?
Chord of Calling in hand.
Wormfang Drake in your library.
Preston and Ashnod's Altar on the battlefield.
3 at most available

   Steps

How does this combo work?
1
Cast Chord of Calling by paying at most 3, searching your library for Wormfang Drake and putting it onto the battlefield.
2
When Wormfang Drake enters, it and Preston trigger.
3
Resolve the Wormfang Drake trigger, exiling another creature if needed.
4
Resolve the Preston trigger, creating a token copy of Wormfang Drake that is a 0/1 Illusion.
5
When the Wormfang Drake token enters, it triggers, exiling the nontoken Wormfang Drake.
6
Activate Ashnod's Altar by sacrificing the Wormfang Drake token
7
When the Wormfang Drake token dies, it triggers, returning Wormfang Drake from exile to the battlefield.
8
Repeat from step 2.

   Results

What do I get from this combo?
Infinite ETB
Infinite LTB
Infinite colorless mana
Infinite creature tokens
Infinite death triggers
Infinite recursion of creature cards in your graveyard
Infinite sacrifice triggers