Jennika's Technique is a uncommon Instant card from Teenage Mutant Ninja Turtles (TMT), collector number 236. Current market price: $0.17 (foil $0.27), TCGplayer market prices via Scryfall.
Sneak {R} (You may cast this spell for {R} if you also return an unblocked attacker you control to hand during the declare blockers step.) Jennika's Technique deals 2 damage to each creature.