The strategy is simple, although what you may be doing will change depending on what you are playing against. Knowing the modern meta is an important part of playing this deck correctly. Hand disruption is strong versus combo and control, while the removal suite is strong versus aggro. Slow the opponent from doing whatever their plan is (this is where Liliana shines), then play a creature and smash. Cool interactions include using Knight of the Reliquary to sac one of your lands to fetch up either a Gavony Township, Treetop Village or Tec Edge to either disrupt the opponent or present threats. Gavony works great with Lingering Souls and presents a very fast clock, but are generally weak to Anger of the Gods which has been seeing more play in modern, whereas the other threats will survive Anger.
Sideboard strategy:
Engineered Explosives - Affinity, Tokens, Bogles, any swarm and other scenarios when applicable, it's just a general catch all.
Pithing Needle - Strong versus Pod (Edit: R.I.P. Pod), Tron (Karn or O-Stone), any planeswalker and any other pesky activated abilities like manlands etc.
Batterskull - Grindy midrange matchups.
Spellskite - Great vs Splinter Twin, Burn, Bogles, Infect, Affinity, Zoo, and it's okay vs Scapeshift. This should be in EVERYONE'S sideboard.
Aven Mindcensor - As Tron and Pod are probably this deck's worst matchups, these sideboard slots are dedicated specifically towards those, although it can be brought in versus any other search heavy decks or crazy combo decks like Tooth and Nail. (Edit: Pod is now gone but people are playing Bloom Titan far more than in the past. Still good enough to merit a sideboard slot in my opinion.)
Scavenging Ooze - He's great in a ton of matchups, but after tons of testing I feel that I don't like 4 in the main deck, although post-board 4 is definitely acceptable. Sometimes you end up with 3 or so Oozes in hand with nothing to eat which is bad for the main deck, but if an opponent is running a graveyard-based strategy you want as many as you can get after board.
Kitchen Finks - Solid beater and great in matchups like Burn, Delver, the mirror, etc.
Stony Silence - Pod, Tron, Affinity, Isochron Scepter shenanigans etc.
Golgari Charm - One of the only problems for this deck is a swarm of tiny creatures. This spell handles that problem, and provides additional utility against boardwipes or to remove a pesky enchantment.
Surgical Extraction - Graveyard shenanigans / disruption (E.g. Thoughtseize their combo piece and remove them from the game)
Zealous Persecution - Great vs the swarm decks as mentioned earlier that is pretty much this deck's only weakness. Also just generically good in many matchups.
Damnation - If they somehow have a better board presence than I do.
Timely Reinforcements - For burn, Zoo, fast swarm strategies or direct damage.
I hope you all enjoy this list has been very fun to play. It is much different than the normal types of decks I make, which are generally combo + control.