Vishgraz, the Doomhive — Phyrexia: All Will Be One Commander #4

Menace, toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

When Vishgraz enters, create three 1/1 colorless Phyrexian Mite artifact creature tokens with toxic 1 and "This token can't block."

Vishgraz gets +1/+1 for each poison counter your opponents have.