This can counter all of the Eldrazi titans except Emrakul, the Aeons Torn and even with the original Emrakul it still counters the “take an extra turn” ability unless they pay 4. Seems super strong at first glance and forces your opponent in standard playing Hydroid Krasis to either have a counter for this or leave 8 mana open (or 4 mana if they want to pick between the ability or creature half of the Krasis). It almost makes Gadwick, the Wizened the better creature draw spell in some respects if you think your opponent has this counter, since Gadwick’s draw is an ETB and does not go on the stack at the same time you cast him.
The problem with defining this format by what is "fun" is that everyone seems to define fun as what they don't lose to. If you keep losing to easily answered cards, that means you should improve your deck. If you don't want to improve your deck, then you should come to peace with the idea that you are going to lose because you chose to not interact with better strategies.