Lightning bolt is never and could never be called buff. You cant rule a card based on use, it have to be on effect, going the other way is logical fallacy. Let me illustrate: If you base a cards designation on its use, which is what have been done with rage for example then blessing is control vs antimatter, plate armor is cc because it stops creatures in combo with gravity shield. Adrenaline would become control due to killing with poison. Endow would become CC PC and Heal as it is possible to get them all.
The wording of the rules are hinky at best. Allow the missed buff cards or restate the rules as you missed several buff cards.