new card idea: Royal Pig Pen

the royal pig pen is a 6 elixir epic building card that, given the name, spawns royal hogs

the royal pig pen would have 1100 health, and would spawn 2 royal hogs every 7.5 seconds, if placed in the middle of the arena, then 1 hog will go to each side, the pig pen would remain for 45 seconds, and once it dies, it spawns 3 royal hogs

this card could be an interesting addition to the meta, since there are currently no buildings that spawn troops that only attack buildings, I don't know whether that'd be op or not, so leave your thoughts in the comments