Uncomfortable Chill

A -2/-0 shaves power without touching the creatures that carry it, which is the tell: this is a defensive Fog dressed as a cantrip, not removal and not a board wipe. Shaving two power off every attacker rarely stops a creature from dealing damage outright, so the effect blunts an alpha strike just enough to survive a turn while you replace the card you spent. That pairing is the whole point. A pure damage-reduction instant would rot in hand against a grindy board, but stapling a card draw to it sets the floor at a cantrip and the ceiling at the turn you needed to live through. The asymmetry does quiet work too: the penalty lands only on creatures opponents control, so your own attackers swing unimpeded if you want to race back. As an answer, it buys a single combat step rather than solving a board, the kind of stopgap that reads as filler in a vacuum and as breathing room when the life totals are tight. The honest read is a combat speed bump attached to a draw spell, built so that even when the -2/-0 does nothing relevant, you are not down a card for casting it.