The Power Nine were only printed for the very first core card sets, and the group includes the Black Lotus, Ancestral Recall, Time Walk, Timetwister, and the Mox jewel cards: Mox Pearl, Mox Ruby, Mox Emerald, and Mox Jet, as well as the Mox Sapphire
(If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.) When this creature enters or becomes monstrous, exile up to two target artifacts and/or enchantments controlled by different players
Based on the latest market prices tracked on TCG Stacked, Priest of Iroas is worth about $0.04 USD for a regular copy and $0.17 USD for a foil copy
But for a guy like me, being able to sell it is life changing
Aurelia decks tend to go in two main directions, either a very heavy equipment-focused design or in an extra combat steps style of deck