Epic 2 Mana Summoners

A few days ago I bought a level 2 epic summoner without noticing that the only advantage of 2 mana epic monster is that when you use them at you'll only have 1 mana free space left. To be honest l regret buying a 2 mana epic summoner. The best use case of 2 mana epic summoner is choosing these summoners in silenced summoners mode because in this mode summoners don't give any additional advantage to monsters. In my opinion buying legendary and rare summoners are better than buying epic summoners but if you have spare money to spend then these summoners can help you to win tournaments.