The number one card in the Professor's video was Jace, the Mind Sculptor, and that's famously one of the most powerful cards of its era
Its stronger, however, because of two things: The infamous combination of Strip Mine and Crucible of Worlds to get rid of all of your opponents lands and powerful synergy with cards like Oracle of Mul Daya to play tons of lands
As such, its no wonder many current decks use lifelink cards
MTG Commander Masters Sliver Commander Sliver Gravemother Sliver Gravemother is a pretty gnarly commander for this Sliver typal deck
A more recent addition to this deck is the mighty Ox of Agonas , a red mythic from the Theros: Beyond Death set
Seven is a lot of new cards to pick up in a short time frame, so its no wonder that were seeing a boost in Junds performance