I have a Fatal Push, an Opt, and a Thoughtseize
The magic merges in vibrant color which contrasts well against the blue tones
Goblin Matron can find the silver bullet you need for your situation, whether thats Goblin Trashmaster to deal with artifacts, Skirk Prospector for a huge mana boost, or even just a win condition like Muxus, Goblin Grandee
But do note that he's still in more than 3k decks as a Commander, so he's pretty beloved to this day
This is especially useful if you want to create a themed set say, a custom commander cycle, a series of tournament memories, or a collection of card alters you've created
For example, its not out of the ordinary for the deck to have at least a Nyx-Fleece Ram and a Courser of Kruphix on field by the time we play Archangel of Thune