Charge of the Mites is a common Instant card from Phyrexia: All Will Be One (ONE), collector number 6. Current market price: $0.21 (foil $0.23), TCGplayer market prices via Scryfall.
Choose one — • Charge of the Mites deals damage equal to the number of creatures you control to target creature or planeswalker. • Create two 1/1 colorless Phyrexian Mite artifact creature tokens with toxic 1 and "This token can't block." (Players dealt combat damage by them also get a poison counter.)