Forcing him to attack is a necessary way to prevent his ability from getting too out of control, but even then, there are plenty of ways of giving him some evasion
Pillar Analysis: Legendary Power (Creature Ramp), Scarcity (Reserved List), Format Powerhouse (EDH/Legacy)
Multiverse Legends
Its a bit painful to say, but in terms of rarity, theres only two slots were going to focus on here
Gyruda, Doom of Depths (Gigan, Cyberclaw Terror alternate) | Illustration by Jesper Ejsing These Godzilla cards are legal in any format that their original cards are legal in , which is anything except for Standard barring special format rules like Pauper that excludes anything at uncommon or higher rarity
Blue has the ability to use counterspells while black has the ability to force the opponent to discard