Harvey Walters

When Harvey Walters enters the battlefield Investigate.
Harvey can block an additional creature each turn
Prevent trample damage
{t}{g}: Draw a card and reveal it, if it is a sorcery or instant, remove an insanity counter from yourself and add that card to your hand, otherwise shuffle it into your library.
He checked his books one last time to confirm his theory, if he's right it could spell the end of everything...