The last year has been good for this deck overall
It might not be the best deck in the format, but it certainly holds its own against the developing metagame
If there is no collector number, the card is probably an early printing, although Japanese cards continued to not display the number for a while longer
The cards' concept was that they essentially used energy to change the color of a spell being cast or a permanent in play with the concept being that players could do something like playing Thoughtlace on an opponent's spell to turn it blue so they can counter it with a Red Elemental Blast, or do a surprise change of color to a permanent for "protection from" purposes
Given Holts time as a Dancer main and playing different Mages, its no surprise that FFXIV Commander Deck focuses on spells, specifically non-creature spells
If it is destroyed but put into a zone other than a graveyard, you'll gain life