You will get 2 Mario Keys

Contents of the Mario Crate:

Mario Charizard- 12.5% chance

King Boo Gengar- 12.5% chance

Toad Breloom- 12.5% chance

Bowser Stone Shell- 12.5% chance

Goomba Shroomish- 12.5% chance

Shyguy Vileplume- 12.5% chance

Luigi Sceptile - 12.5% chance

Kamek Marowak- 12.5% chance