Resurrection in Heroes 4

Basic Resurrection allows the hero to resurrect 20% of the friendly creatures who die in combat. Undead, mechanical, and elemental creatures cannot be resurrected.

Advanced Resurrection allows the hero to resurrect 30% of the friendly creatures who die in combat. Undead, mechanical, and elemental creatures cannot be resurrected.

Expert Resurrection allows the hero to resurrect 40% of the friendly creatures who die in combat. Undead, mechanical, and elemental creatures cannot be resurrected.

Master Resurrection allows the hero to resurrect 45% of the friendly creatures who die in combat. Undead, mechanical, and elemental creatures cannot be resurrected.

Grandmaster Resurrection allows the hero to resurrect 50% of the friendly creatures who die in combat. Undead, mechanical, and elemental creatures cannot be resurrected.