Nasus, Preserver of Knowledge

Nasus attacks each turn if able.
You may exert Nasus as it attacks. If you do, Nasus gains trample and lifelink until end of turn. (An exerted creature won't untap during your next untap step.)
Parley — At the beginning of combat on your turn, each player reveals the top card of their library. For each non-land revealed this way, you may tap target artifact or creature and put a stun counter on it. Then, Nasus gets +1/+1 until end of turn for each land revealed this way. Then, each pl