Cast First Day of Class by paying {1}{R}.
Activate Ashnod's Altar by sacrificing the persist creature.
When the persist creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
When the persist creature enters, First Day of Class triggers, putting a +1/+1 counter on the persist creature.
Repeat from step 2

Infinite sacrifice triggers

Infinite ETB

Infinite LTB

Infinite colorless mana

Infinite death triggers

Persist Creature

Ashnod's Altar

First Day of Class

Cast First Day of Class, allowing yourself to loot once due to learn and making it so whenever a creature enters the battlefield under your control this turn a +1/+1 counter will be put on it.
Cast Shield Sphere.
First Day of Class triggers, putting a +1/+1 counter on Shield Sphere.
 Activate Together Forever by paying {1}, making it so the next time Shield Sphere dies this turn, it returns to your hand.
Activate Ashnod's Altar by sacrificing Shield Sphere, adding {2}.
Together Forever triggers, returning Shield Sphere to your hand.
Repeat.

Infinite storm count

Together Forever

Shield Sphere

Cast First Day of Class, allowing yourself to loot once due to learn and making it so whenever a creature enters the battlefield under your control this turn a +1/+1 counter will be put on it.
Cast Memnite.
First Day of Class triggers, putting a +1/+1 counter on Memnite.
 Activate Together Forever by paying {1}, making it so the next time Memnite dies this turn, it returns to your hand.
Activate Ashnod's Altar by sacrificing Memnite, adding {2}.
Together Forever triggers, returning Memnite to your hand.
Repeat.

Memnite

Cast First Day of Class, allowing yourself to loot once due to learn and making it so whenever a creature enters the battlefield under your control this turn a +1/+1 counter will be put on it.
Cast Phyrexian Walker.
First Day of Class triggers, putting a +1/+1 counter on Phyrexian Walker.
 Activate Together Forever by paying {1}, making it so the next time Phyrexian Walker dies this turn, it returns to your hand.
Activate Ashnod's Altar by sacrificing Phyrexian Walker, adding {2}.
Together Forever triggers, returning Phyrexian Walker to your hand.
Repeat.

Phyrexian Walker

Cast First Day of Class, allowing yourself to loot once due to learn and making it so whenever a creature enters the battlefield under your control this turn a +1/+1 counter will be put on it.
Cast Ornithopter.
First Day of Class triggers, putting a +1/+1 counter on Ornithopter.
 Activate Together Forever by paying {1}, making it so the next time Ornithopter dies this turn, it returns to your hand.
Activate Ashnod's Altar by sacrificing Ornithopter, adding {2}.
Together Forever triggers, returning Ornithopter to your hand.
Repeat.

Ornithopter

Cast First Day of Class, allowing yourself to loot once due to learn and making it so whenever a creature enters the battlefield under your control this turn a +1/+1 counter will be put on it.
Cast Rograkh.
First Day of Class triggers, putting a +1/+1 counter on Rograkh.
 Activate Together Forever by paying {1}, making it so the next time Rograkh dies this turn, it returns to your hand.
Activate Ashnod's Altar by sacrificing Rograkh, adding {2}.
Together Forever triggers, returning Rograkh to your hand.
Repeat.

Rograkh, Son of Rohgahh

Cast First Day of Class, allowing yourself to loot once due to learn and making it so whenever a creature enters the battlefield under your control this turn a +1/+1 counter will be put on it.
Cast Crookshank Kobolds.
First Day of Class triggers, putting a +1/+1 counter on Crookshank Kobolds.
 Activate Together Forever by paying {1}, making it so the next time Crookshank Kobolds dies this turn, it returns to your hand.
Activate Ashnod's Altar by sacrificing Crookshank Kobolds, adding {2}.
Together Forever triggers, returning Crookshank Kobolds to your hand.
Repeat.

Crookshank Kobolds

Cast First Day of Class, allowing yourself to loot once due to learn and making it so whenever a creature enters the battlefield under your control this turn a +1/+1 counter will be put on it.
Cast Crimson Kobolds.
First Day of Class triggers, putting a +1/+1 counter on Crimson Kobolds.
 Activate Together Forever by paying {1}, making it so the next time Crimson Kobolds dies this turn, it returns to your hand.
Activate Ashnod's Altar by sacrificing Crimson Kobolds, adding {2}.
Together Forever triggers, returning Crimson Kobolds to your hand.
Repeat.

Crimson Kobolds

Cast First Day of Class, allowing yourself to loot once due to learn and making it so whenever a creature enters the battlefield under your control this turn a +1/+1 counter will be put on it.
Cast Kobolds of Kher Keep.
First Day of Class triggers, putting a +1/+1 counter on Kobolds of Kher Keep.
 Activate Together Forever by paying {1}, making it so the next time Kobolds of Kher Keep dies this turn, it returns to your hand.
Activate Ashnod's Altar by sacrificing Kobolds of Kher Keep, adding {2}.
Together Forever triggers, returning Kobolds of Kher Keep to your hand.
Repeat.

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