Ozox, the Clattering King | Phyrexian Altar | Blight Mound

Cards

Activate
Phyrexian Altar by sacrificing
Ozox, adding ({1} magic symbol) .
When
Ozox dies, it and
Blight Mound trigger.
Resolve the
Ozox trigger, creating a legendary 2/1 Jumblebones creature token.
Resolve the
Blight Mound trigger, creating a 1/1 Pest creature token.
Activate
Phyrexian Altar twice by sacrificing Jumblebones and the Pest, adding ({1} magic symbol) ({B} magic symbol) .
When Jumblebones and the Pest die, they trigger.
Resolve the Jumblejones trigger, returning
Ozox from your graveyard to your hand.
Resolve the Pest trigger, causing you to gain 1 life.
Cast
Ozox by paying ({2} magic symbol) ({B} magic symbol) .
Repeat.