In the 7th edition of the X/Y block, Ancient Origins , we had another pair: Energy Retrieval AOR 99 and Trainers' Mail AOR 100
Using the complement method: P(X 1) = 1 P(X = 0)
There is a limit to how many times players can do this as they can only carry four of this card in any given deck
Kefka, Court Mage // Kefka, Ruler of Ruin Rarity: Mythic Rare TYPE: Legendary Creature // Legendary Creature SUBTYPE: Human Wizard // Avatar Wizard CMC: 5 Mana cost: USD: $5.07 EUR: 5.42 TIX: 0.03 EDHREC RANK: 3169 (4/5) Whenever Kefka enters or attacks, each player discards a card
Additionally, one content creator got a chance to preview a card before the full spoiler was published - the YouTube channel ZiggyD Gaming
Expedition Lookout's last ability will apply if any opponent has eight or more cards in their graveyard, not necessarily all of them or even the one Expedition Lookout is attacking