I've spent way too much time with this game. It's really addictive (my wizard level is currently >7000).
Does anyone know if there is a limit on the summon multiplier (for non-pylon fields)? I'd like to try to see if I can do better than beating endurance by using summoning instead. I know the formulas for determining the multiplier, but I don't know if there is a maximum (like the 50x limit for the pylon fields).
BTW...
Currently, if you summon too many monsters in a single wave, the monster hitpoints increases to about 10^307 and then becomes "Infinity." Then if you hit these infinite HP monsters with a shrine, the remaining hitpoints becomse NaN. Effectively they cannot be killed. I was really hoping for a finite maximum so that I could increase the number of monsters without further increases in HP. Then I could kill such monsters with obsessive compulsive use of shrines. Too bad.