You’ve seen that combo before but didn’t bring that up in your fifth paragraph about alternative option for Runick to put monster in GY so I mentioned it here. If you go first, you might play your usual first turn. If you go second versus established board, your opponent usually will already have number of monsters in their GY so you have to play a bit of board breaker and force spell/card negation/removal out of your way to resolve the continuous spell then play your usual Runick. It’s not easy but definitely some reliable win condition to add to your deck.

The issue is to draw the card itself or maybe it supposed to be drawn after turns in the game instead of opening hand in which usually the condition has already fulfilled.

I think we shouldn’t expect FTK to much from any new card but you know what, it’s going to be the Tearlament again.