Magic is full of unique interactions and mechanics, and sometimes these interactions lead to decks that are too powerful for a format
The color combination and Killian let you focus on one key attacker and gives you lots of options for combat
Pairs just as well with animation effects Cards like Tezzeret, Betrayer of Flesh and Karn, the Great Creator can already make these tokens move about and attack for free before transforming them
Youll get the most bang for your buck here by picking up relevant cards from the Game Changers list, like Smothering Tithe, Enlightened Tutor, and Necropotence
Even with just a single Drowned Secrets on the battlefield, something like Merfolk Secretkeeper (both the adventure and creature modes) into Callous Dismissal on Merfolk Secretkeeper into Merfolk Secretkeeper again ends up milling 18 cards for a total of six mana, making it a great way to close out the game once our opponent's library starts to dwindle
Shield of the Ages protects the player, costs only two, and can be used multiple times a turn
