keep them off the field, the desecrate them with some midrange stuff, I know some other cards would be better like more shock lands but i'm trying not to completely obliterate my life's savings. this is what I actually have. This is my first time with anything not aiming to win by turn 4/5 so any and all help is appreciated.
short game: kill anything they play to stall
mid game: drop down some guys to beat on the opponent then resume killing everything they have
late game: hopefully it won't come to this but even so by this time your demon should be pretty big so that should help you. just keep killing them and swinging
kill spells:3 Abrupt Decay 4 Devour Flesh 2 Doom Blade 2 Hero's Downfalland 1 Putrefy should keep their board sufficiently clear
doing the damage: there is the obvious and most powerful Desecration Demon but additionally there is
Reaper of the Wilds
to draw blood if there is no demon. Boon Satyr has just been awesome in this deck. ex/ wanna sac a creature? no? ok well then i'm in for 10 damage ex/2 I get it on my
Reaper of the Wilds
and then i have a 8/7 that I can hexproof! Witchstalker is very nice incase I run into my evil twin playing the same scumbag deck. Also I've added in some Scavenging Oozes to take advantage of everything i'm killing.
other spells:
Deathrite Shaman: deals some solid damage through exiling your kill spells after they have been used
Thoughtseize: wreck their hand
Golgari Charm: in play testing I have actually used all three parts of the charm, can't say enough good things about it
side board:
Abrupt Decay: bring in against fast decks, enchantment decks, and control decks
Dark Betrayal
: switch with doom blade if they're playing black, remember it will hit multicolored creature if it's even part black
Doom Blade: if they aren't playing black bring it in!
Duress: bring in against controlling decks or non creature based decks
Gaze of Granite: bring in against aggro or devotion decks. it just crushes their spirits. aim to drop at 2/3
Lifebane Zombie
: bring in against green or white decks with heavy creatures
Witchstalker: bring in against control decks
but what do I take out???
Devour Flesh: out when you play against ramp decks
Doom Blade: out if they play black
Gaze of Granite: if playing against big ramp decks, or low creature decks
Putrefy: if there is not other good spells to take out this one is weakest in deck
