Doubling your lifegain just doesnt matter in Limited, and cost reduction isnt that important either, especially once youve hit 4+ mana already
-2/-2 is already a reasonable removal spell for the early game, but you can easily sacrifice a throwaway artifact/creature to kill just about anything in the format
It works pretty well in multiples, too, since the demon from one room qualifies for the Annex of another
Cecil, Dark Knight / Cecil, Redeemed Paladin Besides its incredible, flavorful design (FFIV), Cecil, Dark Knight is also a very good black suicide aggro card as a 2/3 deathtouch creature with a little bit of a downside that you can turn into upside later
This effect can be powerful with draw spells that targets like Blue Suns Zenith, Braingeyser, and Commanders Insight