Which level 5 monster is the best?

What makes a Lich good? In my opinion, it's quite weak. But Minotaurs are definitely very strong. Personally, I like the Thunderbird the most – it can fly, has a lightning attack, and I just like it. And the others are also quite good – for example, Djinns, with their spells on units – it's very convenient. Everyone has already said everything that can be said about the Gorgon, and of course, Dendroids are also good. But Liches are probably the most useless level 5 unit – the only ranged attacker in the castle, and so weak... the cloud doesn't help much; the enemy won't always be clustered together!