Archelos, Lagoon Mystic
Selkie Hedge-Mage
Aluren

   Prerequisites

What do I need to start this combo?
Selkie Hedge-Mage in hand.
Archelos and Aluren on the battlefield.
You control at least two Islands. Archelos is tapped.

   Steps

How does this combo work?
1
Cast Selkie Hedge-Mage by paying 0.
2
Selkie Hedge-Mage enters the battlefield tapped due to Archelos, triggering its second ability, as well as its first ability if you control at least two Forests.
3
If applicable, resolve the first Selkie Hedge-Mage trigger, causing you to gain three life.
4
Resolve the second Selkie Hedge-Mage trigger, returning it from the battlefield to your hand.
5
Repeat.

   Results

What do I get from this combo?
Infinite ETB
Infinite lifegain
Infinite lifegain triggers
Infinite LTB
Infinite storm count