Robbie Rotten a

Creatures you control have Hexproof
When Robine Rotten attacks, your opponent
reveals their hand you may cast an instant or
sorcery card from their hand without paying its
mana cost.
If your life total would be reduced to less than 1,
Reduce it to 1 instead, then transform Robbie
Rotten. (If Robbie Rotten is in your hand, graveyard
or in exile, this effect still activets and you put this
card into play transformed.)