The first card to feature this is the 1/1 White Bird Wings of the Guard, which costs one generic and one White mana to cast
While that spell allowed for explosive, high-value artifact turns, Nanogene conversion instead foregrounds creature combos and powerful, game-ending swings
Thankfully, there are numerous ways to both protect and make the token unblockable in Quandrix colors, so expect to see this at tables a decent amount of the time
Secret council is a variation of council's dilemma that asks players to cast their votes in secret, then reveal those votes at the same time
Its almost always used as a secondary creature type in conjunction with a more popular one (vampire horror, for example), though there are a few stand-alone horrors
Seven mana is a bit hefty to be sure, but it does so much that it's easy to justify the cost