Clarence’s earlier shock concerning the lightning powers of his apparent foe was not just a matter of rarity.  It was a matter of self-destruction for his opponent.  The moment Mimring chose to wield his lightning over his fire or even his claws he handed Clarence an edge he wouldn’t otherwise have had.  And perhaps distracted by the need to protect his Master - Mimring apparently never considered that his own plan could work against him too.

You see the chronitons wrapped around the Magma Blossom Bombs were attracted to ionized plasma.  The moment Mimring chose to weave through the Bombs instead of backing away from them (or doing anything else really) - he became the very ionized plasma the chronitons were designed to be attracted to.  Mimring would thus draw chronitons away from the Bombs which would destabilize them - making them, yanno, explode.

And while yes each Magma Blossom Bomb was small and compact Mimring was weaving through several and causing a chain detonation as he went that drew in more nearby Bombs.  The compressed plasma in each Bomb would expand rapidly as their chroniton shell collapsed - one after another in a boiling cloud of scarlett.  It was a brilliant show that Clarence had hoped not to reveal except to one man… but sadly he had little choice now.  

The moment he saw that first Blossom go up he focused his mind and broke down another of his crystals.  Whether or not Mimring survived the plasma blasts Clarence tightened his grip on his staff while the Arctic Flame he had previously gathered at its tip rolled about in the air before it.  Consuming that Crystal once more imbued Clarence’s body with chronitons and allowed him slip back into Time Alter: Triple Black Flash just in case the dragon lived.  By weaving through the Blossom Bombs and inadvertently drawing them towards himself; Mimring caused the explosions to charge the air between the two foes.  

The very phenomenon he had hoped to exploit against Clarence was now spread across the air between them for several seconds.