Ashen Powder will also do the trick, but it'll be worth doing deck checks on Gyruda deck because it's easy to forget that odd CMC cards can't be anywhere in your deck, including the command zone
Its Magics most prolific mechanic that was never evergreen or deciduous, showing up in Urzas Saga, Onslaught, Time Spiral, Shards of Alara, and Amonkhet blocks
The Triumph of Anax The Triumph of Anax is perhaps the weakest of all the THB sagas
Meddling Mage Invitational/World Championship Winner : Chris Pikula Tournament : 2000 Magic Invitational Meddling Mage feels like a classic Azorius card to me, and I was kinda surprised to learn that it was one of the earlier invitational cards, as its still pretty great today
Either a more experienced player can say "Yeah, that's a weird effect and not something that normally happens," or the new player simply collects more cards and notices that, for example, black is much better at forcing discards than white