If a Pokemon has its eyes closed, is in a position where it could reasonably fall asleep, and appears to be motionless, then itll usually be safe to assume its sleeping
Dismantling Wave In Commander, its almost guaranteed you get to snipe a permanent from each player with Dismantling Wave
What you do with them is completely up to you, but make sure you have a few sacrifice effects on hand, since those creatures will return to their owners if Kellogg leaves the battlefield
Japanese cards are often more budget-friendly, with booster boxes for newer sets costing around $50
Right now my deck is playing two copies of Lightning Strike, and I think these would be better off as Bonecrusher Giants I think the added utility of being a good 4/3 creature is worth more than the extra damage unless youre specifically trying to kill three-toughness creatures