While its generally better to find a card you can cast immediately after tutoring so your opponents have less time to plan around you, sometimes the threat of a board wipe like Damnation or a counterspell like Cryptic Command will convince opponents to play a little more cautiously, giving you more time to set up for an even bigger play down the road
How good that will be in Standard depends on the meta, but I could see it as a tool for aggressive Mouse Typal decks against board clears
For the High Mana Value subtheme though, I count only 4 noncreature spells with high mv that you can cast for cheaper (e.g
Even with how much slower Standard has gotten with recent sets, Reanimator style decks can still accomplish the same goal of hurling big problems into your opponents way well before they can comfortably deal with them
Honestly, nothing about Commander 2018 really stands out
The Busiest days value above reflects all recent detections and is more useful than treating Wednesday as a fixed rule