Kritza, the Rat Prince

At the end of your movement phase, if this model has been slain, roll a dice. On a 4+, you can set up this model anywhere on the battlefield more than 9" from all enemy units, with all wounds allocated to it removed.

At the start of the combat phase, you can pick 1 enemy unit within 1" of this unit that has an artefact of power and roll a dice. On a 3+, that artefact of power can no longer be used (if it was used to enhance a weapon, that weapon reverts to its normal form).

Each time this unit fights, after all of its attacks have been resolved, you can heal up to a number of wounds allocated to this unit equal to the number of wounds and mortal wounds caused by those attacks that were allocated to enemy units (to a maximum of 6).