From the Doctor Who set well add Five Hundred Year DiaryFive Hundred Year Diary, a Clue itself that provides a blue mana for each Clue we control, and Martha JonesMartha Jones, who can help us make our creatures unblockable when we sacrifice Clues
And if you cant find enough Nightmares to staff your grisly mill, Umbris also works just as well with Horrors, giving you more options during deckbuilding
Yeah, they enter tapped
The payment of three life was often not super relevant, especially since even now, two cards for two mana is quite the bargain
HM#3 - Glen Elendra Archmage Our final wizard in the HM's is Glen Elendra Archmage
But Final Fantasy introduced sagas that are also creatures, which could be targeted with effects like Tishana's Tidebinder, Fresh Start, or Unable to Scream (since these all affect creatures)