"Has a 20% chance to replace the normal relic being gained. Inspired by all those people who wished relic had a use."
I don't think that this is the best procedure as this card (the relic) can only be achieved by pvp.
I suggest to use the relic spell on your weapon to transform it into a relic blade. Also this can suggest you to apply to a new form of mechanic (or also a serie) of relics, as you can target with the spell creatures, pillars and permanents.