I think that's a new record for most bonuses in a single round
Heartseeker can be free equipped to Knights and snipe multiple creatures per turn cycle
Value creatures like Young Pyromancer and Talrand, Sky Summoner ensure that your spells pull double duty by creating a board state to pressure your enemies
Just like Jhoira earlier, I like him casting fat stuff for five mana, like Insurrection, Eldrazi Titans like Ulamog, Archangel's Light, Plague Wind, Searing Wind, the Ultimatum Cycle like Genesis Ultimatum, Conflux, Apex Devastator, Progenitus, Avacyn, Angel of Hope, the Ancient Dragon cycle, and loads more
THEMATIC INCLUDES Anyone who has watched Endgame will know that Mjolnir, Storm Hammer is an absolute flavor win (even if its skinned from the Assassins Creed universe here)
When you discover X, you reveal cards one at a time from the top of your library, so any cards that do not meet your discover value of X become the rest and essentially get shuffled before you place them at the bottom of your library