Omniscience Draft Issues
First, yesterday in Omniscience Draft I tried to play a Blitz Automaton at 7. The game was asking me to pay additional mana to play it. Everything is supposed to cost ZERO. I thought it was a rule with prototypes. But lo and behold, another player today dropped a Rust Goliath on me at full power on turn one. Then, also today, a player was playing a spell on their turn, I sacrificed Bitter Reunion so I could sacrifice Shore Keeper in response and draw three cards. I sacrificed the Bitter Reunion, tried to tap and sacrifice the shore keeper and the game prompted me to PAY 4.
I'm out 4,000 coins to go 0 and 3 in Omniscience draft because your game keeps glitching out.
-
Muggle_of_the_Coast#19144 commented
With regards to your second issue:
Shore Keeper's activated ability requires 8 mana to activate. The emblem only gives you 5 mana. So after spending the 1 mana to sac Reunion you ended up 4 mana short. That's what the game was asking you for.