Shadowverse

By the way, Cerberus is far from being a must-have for the Dungeon faction.

She is a very effective unit for an aggressive Dungeon strategy. And an aggressive Dungeon strategy can counter Dash decks quite well. However, it must be admitted that if, by the time Cerberus arrives, followed by Phantoms, the opponent hasn't managed to deal significant damage, then they will lose. But often, at least one of these units will be available.
And in general, Cerberus is indispensable with this tactic. But otherwise, she's just okay. I even disenchanted her at the very beginning when I was crafting a decent melee deck (which was good until the Bahamut update). I actually regret that action.

Added 4 minutes later

- Olives (life is pain, no Olive - goodbye control)

I have two. It would be three, but I disenchanted one extra at the beginning because I didn't need it. I never put more than one in the deck anyway.