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In some kinds of lock decks it could be used, combo-d with something like Containment Priest and you could potentially build a deck around effects like these but it's a tough sell

As PotatoPi said

Being able to tutor any goblin card to hand makes Goblin Matron one of the best cards you can draw in a game

Any time that I talk about ETBs and copying abilities, it almost feels obligatory to mention Dockside Extortionist but there are plenty of other great choices too

Mischievous Mystic: Another card for Alela, but also in general for draw-go control decks

I tried to take how narrow or wide an effect would be in addition to power level, but its hard to gauge