The owner of this deck hasn't added a sideboard, they probably should...
Start typing a card name and use the auto-complete feature to quickly select the card you're trying to add. Enter a quantity and add that card to your sideboard!
Submit a list of cards below to bulk import them all into your sideboard. Post one card per line using a format like "4x Birds of Paradise" or "1 Blaze", you can even enter just the card name by itself like "Wrath of God" for single cards.
This deck is basically Shardless BUG but, instead of Shardless Agent + Ancestral Vision, you are using Grim Flayer and other hand/top-of-deck manipulation to set up Temporal Mastery to Time Walk. Hopefully, based on deck construction and tuning, the deck can set up and consistently chain Temporal Mastery multiple turns in a row to end the game quickly.This list is an untested prototype. Several cards may work, but I've pushed it to have as many enablers as possible to try to chain Temporal Mastery turn after turn.
This deck has been viewed 956 times.