The best example of a signal is receiving a very strong card late in the draft
Apart from the new partner commanders and the four-color face card, you get two Esper commanders, a Boros commander, a UW Commander, and two mono-red commanders, all of which deal (at least, to some extent) with the artifact theme of the deck
There are a ton of clerics in Zendikar Rising , Crimson Vow, and Midnight Hunt to add to the deck
Gallery and List of Eerie Cards Cult Healer Ghostly Dancers Optimistic Scavenger Entity Tracker Erratic Apparition Fear of Sleep Paralysis Scrabbling Skullcrab Stalked Researcher Unwilling Vessel Balemurk Leech Dashing Bloodsucker Infernal Phantom Gremlin Tamer Fear of Infinity Skullsnap Nuisance Victor, Valgavoth's Seneschal Best Eerie Cards Balemurk Leech The fact that each opponent loses 1 life when eerie is triggered makes Balemurk Leech an interesting piece of any combo that revolves around looping enchantments
Back to Basics | Illustration by Terese Nielsen Play Boosters There are 13-draftable cards in the make up of a play booster
Having completed the set-up you should have a deck of (at least) 60 cards in front of you, and five cards in your hand