Aside from making an artifact in general, in the right deck this is a psuedo ramp piece as well as a utility card, so I think the versatility makes up for the two not-as-powerful combined abilities
Regarded as an Extra Link, many characters have used this technique in their duels before
After all, you get to choose which creature you kill with Terror, while your opponent chooses with Edict
Weakness: Fire (x2) Resistance: Grass (-30) Retreat: 2 #114 Origin Forme Dialga VSTAR Metal HP280 VSTAR Evolves from Dialga V [C] Metal Blast: 40+ damage
In particular, Lightning pulled it off using the Link Spell Card "Judgment Arrows", while Spectre performed an Extra Link consisting of seven monsters, which he dubbed "Ultimate Extra Link" ("Extra Link Full Mode" in the Japanese version)
Some of these are eye watering, with one famous example holding an official Guiness World Record