Three mana for a split Giant Growth and Dead Weight is honest P1P7 to P1P9 work at sorcery speed; the sneak cost drags it into the P1P3 to P1P5 band for any WB drafter and reshapes the combat math around it. TMT decides most games through the 2/3 and 3/2 commons grinding into each other in slow stalls, and that is the board state the sneak window cracks open. Push an attacker through unblocked, return it to hand as part of the casting cost, then spend
. Because the bounce is a cost rather than an effect, the creature is in your hand before anyone gets priority: the body itself is never at risk. What is at risk is whatever else is on the stack. The mode reads "choose one or both," so when you have the mana you can shave -3/-3 off a blocker and hand +3/+3 to a second attacker on the same cast, which is the line that turns a stalled board into a two-for-one swing. The discipline: a -3/-3 leaves a 3/4 or a 4-toughness Turtle standing, so size the target before you commit.
Opponents are not helpless while it sits on the stack during declare blockers. Stomped by the Foot answers your pump target in response, and against a black deck holding mana you want to wait until the pumped creature can survive the trade.
WB Ninjas is the home, since the deck already wants unblocked attackers and recursive bounces; the sneak cost is upside, not a tax. Take it P1P3 and run multiples. Mardu Sacrifice and BG Food want that unblocked body to stay on the board feeding Food, so they treat the discount as a luxury and run one around P1P6 for the sorcery-speed floor, which still clears the bulk of the format's relevant blockers.

