Each time you're asked to collect evidence, exile any number of cards from your graveyard with total mana value of the indicated number or greater
Each game is full of different stories to play through - which of the two games you pick will determine how those stories will play out - but the main draw is that whilst your opponent is building a deck of cards to try and whittle you down, youll be able to select your own set to shuffle into the deck as well
1 Rogue's Passage
Even the most well-shuffled deck will eventually mill two lands or two creatures when those are the most numerous cards in the deck, so the length of this covenant is limited
Likewise, it also works really well in counters decks (like my Hamza, Guardian of Arashin deck), as the cost to prevent your draw will increase as Esper Sentinel gets bigger and bigger, easily making it more costly to pay for than even Rhystic Study
If two cards are on the board simultaneously, they can still not target each other with spells