Borrowed Grace - It's funny seeing a zombie use a holy relic.
Faith Unbroken - Interesting to see this combination of effects.
Give No Ground - +2/+6? OK then.
Repel the Abominable - This seems pretty good, especially since it also prevents noncombat damage.
Sigardian Priest - Good to see she didn't get corrupted after all. But then, what was with that Eldrazified art from earlier? None of those have showed up.
Contingency Plan - Jace: OK, arms out or arms crossed? At least I can switch between them if one doesn't work with the audience.
Displace - I like the flavor text here.
Enlightened Maniac - For some reason, I find this card charming.
Scour the Laboratory - Definitely not Treasure Cruise, but by the time you want to draw three cards in a delirium deck, this will be 2UU, so maybe playable?
Certain Death - Oh hey, it's Slenderman.
Graf Harvest - A repeatable way to get zombie tokens, so maybe playable?
Prying Questions - The art and flavor is pretty creepy. Also, reminded of that comedy character from Parasyte.
Rise from the Grave - It's been a while since this was reprinted.
Ruthless Disposal - 3 for 2, with a minor possibility of casting the discarded card for madness and/or taking advantage of the sacrificed creature. I don't think it will be used in Standard, but there may be interesting things to do with it in Commander.
Thraben Foulbloods - I was always irrationally annoyed by Thraben Purebloods.
Alchemist's Greeting - This guy looks like Urza.
Blood Mist - Hmm, maybe decent?
Borrowed Hostility - The versatility might make it decent.
Conduit of Storms - Oh nice, they're still doing that thing where red can add mana when attacking. Might be decent in a werewolf deck.
Furyblade Vampire - I feel like this could be good in a vampire / madness deck.
Impetuous Devils - One more than Ball Lightning, but the fact that a creature must block (not necessarily that it must block this) could mean it's still decent.
Otherworldly Outburst - This is a really interesting trick, especially at common. Of course, it's always best to use it when a creature is about to die, but you could also use it on your opponent's creature.
Prophetic Ravings - Hey, it's the OG Mad Prophet! This is definitely better than the equivalent in Theros block that required mana to rummage, and this also provides haste. You could use it to give a creature haste and then later in the game, when it's not as useful as an attacker, you can start rummaging.
Savage Alliance - Probably not even decent... but maybe? 3R to deal 3 damage to one creature and 1 to every other opposing creature.
Shreds of Sanity - This seems like it could be good. Return two cards and discard a madness card.
Stensia Innkeeper - Oh shit, red is getting land freezing! They're finally doing it!
Thermo-Alchemist - Really liked Nettle Drone. While this can't attack, it's still nice to still see this effect at common.
Weaver of Lightning - This seems like it could be good.
Foul Emissary - That last effect is weirdly specific for what we usually see in Magic.
Hamlet Captain - Possibly playable in Bant Humans?
Somberwald Stag - It's still weird seeing "enter the battlefield, fight" effects in green. Note that this is the same cost as that red "deal 4 damage to a creature" sorcery (though that does have madness).
Swift Spinner - I wonder if that spider will be disappointed trying to eat a geist.
Tangleclaw Werewolf - Odd to see "block an additional creature" in green, though I suppose that spider printed in the previous set did that too.
Waxing Moon - Well, at least they did print a werewolf transform card.
Woodcutter's Grit - This seems to provide a better boost to cost ratio than previous green hexproof instants have.
Drownyard Behemoth - This is an interesting hexproof variant, only helping on the turn you first use it as a blocker (since it isn't helpful at other times).
Field Creeper - Nice art.
Geist-Fueled Scarecrow - I'm surprised to see this downside again.
Slayer's Cleaver - Delicious?
Terrarion - I was going to say it's interesting that they specifically printed a card like this that would be weak in Eggs, but it's a reprint, so...