Even outside of this protection from everything silliness, if you've ever played a game with Tidal BarracudaTidal Barracuda in play, you're well aware of just how much it takes over your average game
Surprisingly, this isnt actually a bad idea, as these cards all synergize with themselves
First, Mew ex is a Basic Pokemon like the other two
There are beautifully dark cards such Toxrill, the Corrosive (Showcase) or Olivia, Crimson Bride (Showcase) that make this set wonderful no matter what you pull
We can give our team haste with Rushblade Commander and Goblin Warchief, take to the air with Cloudshredder Sliver or Khorvath Brightflame, give 'em double strike with Sylvia Brightspear, and pump them into huge beaters with Sliver Legion and Coat of Arms
Gaining lore when banishing historically is a powerful effect This is not the first time a similar effect has been introduced into the game, and in the past whenever this ability has shown up its been quite strong