Aqustria, Mage Revealed

0: Put a number of loyalty counters on Aqustria equal to half the number of time counters removed from permanents this turn.
+1: Target player reveals a card from his or her hand. You do the same. If that card has equal mana cost to your card, that player discards that card
-5: Call to Arms Planeswalker. Each other player may cast cards revealed at the same time as that planeswalker.