You control a nontoken creature that can be cast using one colored mana.
Mana Needed
({2} magic symbol) ({W} magic symbol) ({B} magic symbol) ({G} magic symbol) plus enough mana to pay for commander tax, if applicable available.
Steps
Cast
Vishgraz either from your hand or from the command zone by paying ({2} magic symbol) ({W} magic symbol) ({B} magic symbol) ({G} magic symbol) plus commander tax, if applicable.
When
Vishgraz enters the battlefield, it triggers, creating three 1/1 Phyrexian Mite artifact creature tokens and three 1/1 Squirrel creature tokens.
Activate
Phyrexian Altar by sacrificing
Vishgraz, adding ({W} magic symbol) .
When
Vishgraz dies,
Enduring Renewal triggers, returning
Vishgraz from your graveyard to your hand.
Activate
Phyrexian Altar four times by sacrificing four Squirrels and Phyrexian Mites, adding ({2} magic symbol) ({B} magic symbol) ({G} magic symbol) .
Repeat.
Results
Infinite LTB.
Infinite ETB.
Infinite colored mana.
Infinite sacrifice triggers.
Infinite death triggers.
Infinite storm count.
Infinite creature tokens.
Reduce any number of target creatures' toughness to 0.