(this scheme "Long Bow Maniac" has like 4 years old btw)
There is one rule: if you use the Invisibility, you have to something: use teleport, use the ninja rope, or attack. But you can't skip or wait for the end of your turn. In case of this cow, you have to skip 2 TIMES.
Use the maps from the pack. Don't use BnA or Minemadness maps!