I'm Platinum atm and 75% of my opponents are KoG fgts with Fur Hire decks.
I once got like 5 KoG opponents in a row, and 8-9 Fur Hire opponents in a row.
Yes. However, you can often deal with one if you bait its effect with a lesser effect or negate it with UP or DW.
Once that one copy of Wiz is out, this deck is easy pickings.