Does this work?
Hand: 2x King's Court (KC), 2x Overlord (Ov), 1x Bridge (Br)
additionally in the Kingdom: Lurker (Lu), Mining Village (MV)
play KC
... play KC
... ... play Br
... ... play Br
... ... play Br
... play KC
... ... play Ov1 as MV (trash Ov1 +2$)
... ... play Ov1 as Lu (gain Ov1)
... ... play Ov1 as KC
... ... ... play Ov2 as MV (draw Ov1, trash Ov2 +2$)
... ... ... play Ov2 as Lu (gain Ov2)
... ... ... play Ov2 as KC
repeat
could you iterate one more time so I can see what "repeat" means? At this point, both KC and Overlords are in play; I don't see how they can re-enter the cycle.
The Overlords aren't in play (Ov1 is in your hand and Ov2 is the only card in your discard pile) and you don't need the KCs for the loop beyond the first time.
play KC
... play KC
... ... play Br
... ... play Br
... ... play Br
... play KC
... ... play Ov1 as MV (trash Ov1 +2$)
... ... play Ov1 as Lu (gain Ov1)
... ... play Ov1 as KC
... ... ... play Ov2 as MV (draw Ov1, trash Ov2 +2$)
... ... ... play Ov2 as Lu (gain Ov2)
... ... ... play Ov2 as KC
... ... ... ... play Ov1 as MV (draw Ov2, trash Ov1 +2$)
... ... ... ... play Ov1 as Lu (gain Ov1)
... ... ... ... play Ov1 as KC
... ... ... ... ... play Ov2 as MV (draw Ov1, trash Ov2 +2$)
... ... ... ... ... play Ov2 as Lu (gain Ov2)
... ... ... ... ... play Ov2 as KC
Both Overlords trashed themselves, but not the KC’s. You need to Ferry KC and play Overlord-as-KC for everything except the first one for this to work I think? With a few extra steps to make it messier.
It already works.