Many decks that require specific cards tend to find space for Dugares in the Extra Deck since it helps to dig for needed combo pieces
I personally find them pretty dull, but even if they're not the best Pokmon cards, they do get bragging points for one thing - their scarcity
Ok Pikachu [1st Edition] #33 (Pokemon Japanese 20th Anniversary) Details All prices are the current market price
They can't disobey orders, never surrender, and don't stop fighting when a random body part falls off." Nevinyrral, Necromancer's Handbook Commander, Legacy, Modern, Pauper, Vintage Alchemy, Brawl, Competitive Brawl, Historic, Pioneer, Standard, Timeless
Also, they make all of your Creatures cost one less to cast for each Creature you control with a 1/+1 counter on it