I can only spot 1, and I sorry to see that (free Fargo on T4)must off got confused during the 3 month break, anyways here are a few more games then of just mine, and they are played in multi colour, most notably with the peace engine, where 0 cost units are loved, both EricF and Frozen storm have played them in tournament and won with them
Highlighing the rapid cycling, at the end of T4, I only have 3 cards left in my deck
Given the number of games that pop up when I search for KotC or Knight of the conclave, I hardly think they are bad/niche enough to need a buff, and going from forcast 3->2 is a very big buff, the difference in timing I feel when playing with KotC and Vir mech is imense, that extra turn is really important to give your opponent a chance to punish your 0 cost 5/4’s with resist, otherwise they will just roll over everyone.