After source diving, +crit caps at 8 and is made more difficult for "?" attack types to critical hit. So, optimum egg configuration for fast damage on easily available creatures would be 3 Minotaur + green crit egg + lvl 3 brute skill (8 crit); 3 Bombird + gold AC egg + lvl 3 fire skill (5 attacks). At lvl 40 this ends every battle in 2 rounds or less, usually 1.