Activate Ashnod's Altar by sacrificing Kithkin Spellduster, adding {C}{C}.
Kithkin Spellduster dies, triggering its persist ability, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
Kithkin Spellduster enters the battlefield, triggering Denry Klin, putting a +1/+1 counter on Kithkin Spellduster.
Repeat.

Infinite colorless mana

Infinite death triggers

Infinite creature ETB

Infinite creature LTB

Infinite creature sacrifice triggers

Denry Klin, Editor in Chief

Kithkin Spellduster

Ashnod's Altar

Activate Ashnod's Altar by sacrificing Kithkin Spellduster, adding {C}{C}.
Kithkin Spellduster dies, triggering its persist ability, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
Kithkin Spellduster enters the battlefield, triggering Intruder Alarm, untapping all creatures.
Activate Scholar of New Horizons by tapping it and removing the -1/-1 counter from Kithkin Spellduster, causing you to search your library for a Plains card and either put it onto the battlefield or put it into your hand.
Repeat.

Infinite mana creatures you control can produce

Infinite untap of creatures

Put all Plains cards from your libary into your hand

Scholar of New Horizons

Intruder Alarm

Activate Phyrexian Altar by sacrificing Kithkin Spellduster, adding one mana of any color.
Kithkin Spellduster dies, triggering its persist ability, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
Kithkin Spellduster enters the battlefield, triggering Intruder Alarm, untapping all creatures.
Activate Scholar of New Horizons by tapping it and removing the -1/-1 counter from Kithkin Spellduster, causing you to search your library for a Plains card and either put it onto the battlefield or put it into your hand.
Repeat.

Infinite colored mana

Phyrexian Altar

Combos with "Kithkin Spellduster"