Have a read on a player, don't know how to exploit it (X post MTT)

[shakingspear]

I put this in the MTT forum first, but that was probably the wrong location.

Step 4, blinds 50/100. The player on my immediate right is taking part in the blind stealing fun. But he steals in two different ways. The first is the 3X BB steal. When everyone folds he shows his cards to the table, and it's always a monster hand. The second is the push. When he pushes and everyone folds, he doesn't show his cards.

He has more chips than me, so what range of hands should I be calling his all-ins with? Is there any other way for me to exploit this tell?