The surveil lands underscore the theme on investigations, but the best cards tend to be ones without the complex mechanics of disguise or collect evidence
(On eBay, versions of it can fetch upwards of $5000.) If played, it makes all players re-shuffle the cards in their handsas well as what is in the graveyardback into their library (the pile of cards players use in a game) to form a whole new library (deck)
Its also worth noting that other cards with the support ability (like HeiHei above) state that the target must be another chosen character (meaning the supporter cannot select itself), however Merlin does not specify
P/T Number 1 Language English Legal Formats Alchemy, Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Standard, Timeless, Vintage Rulings (10/2/2025) To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions
Aetherling The slowest card on the list for kill clock and one of the weakest in terms of defensive utility too
It's literally twice as good as a 3-drop