Check your local game stores and select Disney parks and stores from Friday, 7th March, then larger retail stores and online from Friday 21st, Match
310.8b A battles protector can never attack it
Point is, the whole strategy revolves around casting spells from exile, from your graveyard, from your library, and so on, and bolstering paradox payoffs like Flaming Tyrannosaurus and Impending Flux
By doing this, you can't guarantee that they will be valuable, but it's a great way to build up our collection
However, Urzas Saga provided its own spin on this rare subgroup of cards with a 0/1 creature that cant be targeted by spells or abilities (from any player, even its owner) due to containing the increasingly hard-to-find shroud keyword