If youre super confused at this point because you have no idea what proxies are, let me explain: proxy cards are essentially printed, homemade copies of MTG cards with different art or abilities (sometimes), or a completely custom card that doesnt exist in Magic like this or this
To resolve Nezumi Informant's ability in a multiplayer game, the next opponent in turn order (or, if it's an opponent's turn, the opponent whose turn it is) chooses a card in hand and sets it aside without revealing it
Realmbreaker, the Invasion Tree Rarity: Rare TYPE: Legendary Artifact SUBTYPE: - CMC: 3 Mana cost: USD: $0.77 EUR: 0.63 TIX: 0.03 EDHREC RANK: 4072 , : Target opponent mills three cards
That is untrue
This gave rise to a period where Affinity decks dominated competitive play, necessitating adjustments to maintain balance
We already have a couple of enchantment decks built around cards like Hallowed Haunting that could easily run Invasion of Theros to tutor Heliod, the Radiant Dawn and Ossification and then flip into Ephara, which seems like a tough card to beat outside of a Farewell or Sunfall