since this card has skirmisher keyword it seems that condition "skirmisher >1" is redundant for triggering 45 damage (you need Mortred to trigger that and that means you also got needed skirmisher) if I understand that correctly
and as you want to have two of this for which purpose you can use some summoning or replacing cards (Magic door, Reinforcements, Mask of phantasm, ...) i think you still need pretty good luck to get to this situation :), but its ok and I feel better about this because I know what result will bring playing this card, but just my opinion maybe someone would appreciate more percentage chance of triggering :)