A card like this has somewhat limited applications, creating combinations with only

cards that cite color. Included in Eighth Edition were the Western and Eastern Paladins,

which can destroy any creature that is white or green, respectively. That makes this

artifact a very straight-forward way of killing any creature, provided that it is not

indestructible. You might also look at anything that has a "protection from color" ability.

Using Distorting Lens on an opponent's creature will allow your "protection" creature to

either go unblocked, or block without receiving any damage. Imagine that you had a flier

with color protection, it would be able to absorb any blow from a single monstrosity,

excluding unblockable and trample creatures (trample damage will carry over for the

superfluous amount). This sort of thing won't be popular in "the big leagues", simply

because trivial technicalities have been eliminated by spells that can clear the whole

board. Again, in an appropriately restricted format, the tactic might regain its relevance.
Eighth Edition
8ED Artifact