Consider the Prime Directive 51 (Star Trek)

Choose one — • Interfere — Counter target spell unless its controller pays {3}. • Observe — Tap up to one target creature and put a stun counter on it. Draw a card. (If a permanent with a stun counter would become untapped, remove one from it instead.)

NM - $4.50
LP - $3.60
MP - $2.70
HP - $1.80
DMG - $0.90