Yoshi's Island DS (U) +3 Trainer by crackerIt includes:Infinite LivesInfinite Mario TimeInfinite EggsNote: Extract the contents of the zip to a folder along with your game and Xdelta (http://evanjones.ca/software/xdelta.exe) then run cr-yidsp3.bat
Or when your player dies, you can say in code, if enemy exists, do nothing, but if enemy does not exist, then create enemy at certain spot. (This would be a pain tho for lots of emeies)