Mite Overseer

A token factory that also arms the tokens it makes. The activated ability spins out 1/1 Phyrexian Mites, each carrying toxic 1 and a can't-block clause, and the Phyrexian pip in that cost lets the line run on life instead of white pips when the mana gets tight. But the anthem is the clause worth studying: during your turn, every creature token you control gets +1/+0 and first strike. That converts a board of Mites (bodies with 1 power and no defensive use) into 2/1 first-strikers that survive their attacks. First strike here is a survival keyword, not a delivery one: toxic only pings the player, and only when the token connects unblocked, so the plus is that your attackers win the trades a blocker offers and stay on the board to keep chipping poison counters turn after turn. A one-power token that dies to a chump every turn is a broken engine; one that kills the chump and lives is a clock. The Overseer's own body is a 4/2 with first strike, which is the tension in the card: it is a genuine deterrent on defense, killing most ground attackers before they land a hit, yet its anthem keeps buffing the tokens whether it attacks or holds back behind a widening line of expendable poison-bearers. It does almost nothing in a deck that is not already committed to going wide and going for the throat.