Amphis count as fliers, large monsters and archers. Use that to shield your other troops.
Give each a ring-of-regen, Place them in front with: "Hold or Fire (closest)" x5, Attack Rear
Place a gazillion of Longbowmen behind them, and the amphis will draw all the attacks and Fire orders which are aimed at closest, archers, fliers or large monsters. With the ring of regen they should be able to negate the damage they recieve and at least make them take less afflictions.
But would I summon amphis? Not likely, unless I got some special site which reduces the summoning price
