Felisa, Fang of Silverquill + Phyrexian Altar + Elenda, the Dusk Rose Combo

All permanents on the battlefield.

Elenda must be your commander.

Elenda has at least three +1/+1 counters on it, plus an additional +1/+1 counter for each time you've cast Elenda from the command zone this game.

plus enough mana to pay for commander tax, if applicable available

Activate Phyrexian Altar by sacrificing Elenda, adding .

Choose to return Elenda to the command zone from your graveyard.

Elenda dies, triggering its second ability and Felisa.

Resolve the Elenda trigger, creating a number of 1/1 Vampire creature tokens equal to Elenda's power.

Resolve the Felisa trigger, creating a number of 2/1 Inkling creature tokens equal to the number of counters on Elenda.

Cast Elenda from the command zone by paying and commander tax, if applicable.

Activate Phyrexian Altar by sacrificing a Vampire or an Inkling, adding .

The Vampire or Inkling dies, triggering Elenda's first ability, putting a +1/+1 counter on it.

Repeat from step 7 for each remaining Vampire or Inkling.

Repeat from step 1.

Infinite +1/+1 counters on a creature

Infinite colored mana

Infinite commander casts

Infinite creature tokens

Infinite death triggers

Infinite creature ETB

Infinite creature LTB

Infinite creature sacrifice triggers

Infinite storm count