First, the Auto Ability reads: When The Emperor is put from the field into the Break Zone, draw 1 card
Catch-All Countermagic Covers Every Matchup Unlike more narrow counterspells that only hit certain card types or mana costs, Counterspell can counter anything
Cards List "A new day dawns for Avishkar, and we shall draw our power from its light."M 0191 DFT First strike, trample When this creature enters, you may search your library for up to two artifact, creature, and/or enchantment cards with mana value 1 or less, reveal them, put them into your hand, then shuffle
Sounds like Simic to me
For example, you can't cast a sorcery with spectacle during an opponent's turn unless another effect allows you to do so, even if that player has lost life this turn