Looting and making a Treasure for two mana seems great in a reanimation or graveyard deck where you can pitch your Atraxa or Titan of Industry and ramp toward your reanimation spell a turn earlier
Dolmen Gate spiked in price earlier this year when Anzrag came out, and Stranglehold seems fairly niche, but can be a nice tool against tutors and extra turn steps - to make playing red feel like less of a handicap
Nahiri, Forged in Fury churns through your deck when attacking with equipped creatures, and Reyav, Master Smith turns those Bone Saws into Fireshriekers
They also make it so that our other creature spells cant be countered, which is great against blue decks, and they give all of your other creatures trample, which is just incredibly powerful
Step into the role of a mighty monarch with Syr Gwyn, Hero of Ashvale leading your charge
Hoser cards Ethersworn Canonist is obviously great versus Storm decks, but its also useful against decks that want to play a ton of cheap spells in the early game (think things like Infect and Burn)