Rise of the Dark Realms | Phyrexian Altar | Greenwarden of Murasa

Cards

Rise of the Dark Realms in hand.
Phyrexian Altar and
Greenwarden of Murasa on the battlefield.
The number of nontoken creatures you control plus the number of creature cards in all graveyards is at least nine.
({7} magic symbol) ({B} magic symbol) at most available.

Activate
Phyrexian Altar twice by sacrificing
Greenwarden of Murasa, adding ({B} magic symbol) .
Repeat step 1 for each other nontoken creature you control.
Cast
Rise of the Dark Realms by paying ({7} magic symbol) ({B} magic symbol) ({B} magic symbol) , returning all creature cards from all graveyards to the battlefield under your control.
When
Greenwarden of Murasa enters the battlefield, it triggers, returning
Rise of the Dark Realms to your hand from your graveyard.
Repeat.

Infinite LTB.
Infinite ETB.
Infinite colored mana.
Infinite sacrifice triggers.
Infinite death triggers.
Infinite storm count.
Infinite magecraft triggers.
Put all creature cards from all graveyards onto the battlefield under your control.