Detect Magic

This enchantment enters with 3 concentration counters on it.
At the beginning of your upkeep, remove a concentration counter from this enchantment, then look at target opponent's hand. Choose instant, sorcery, or enchantment. Spells of the chosen type that opponent casts cost {2} more to cast until your next turn.
At the beginning of your upkeep, if there are no concentration counters on this enchantment, sacrifice it and draw a card.