Turn 3 : During your untap step before you untap, Old Fogey phases in
She's one of the big bad monsters of the format, and whenever she hits the battlefield it immediately becomes less a four-way game and more of a three-on-one

Abyssal Gorestalker Abyssal Harvester Abzan Devotee Aclazotz, Deepest Betrayal Acolyte of Aclazotz Adorned Crocodile Adventurous Eater Agate-Blade Assassin Agency Coroner Agent Venom Agents of HYDRA Aggressive Negotiations Aggressive Symbiosis Ahriman Al Bhed Salvagers Alchemist's Assistant Alesha's Legacy Alien Symbiosis Alley Assailant Alpharael, Stonechosen Ambush Gigapede Anchovy & Banana Pizza Ancient Vendetta Another Chance Appendage Amalgam Arbiter of Woe Arcane Omens Archenemy's Charm Ardyn, the Usurper Armaggon, Future Shark Arnim Zola, Bio-Fanatic Arnyn, Deathbloom Botanist Ashiok's Reaper Ashiok, Wicked Manipulator Auntie's Sentence Avenger of the Fallen Azula Always Lies Azula, On the Hunt Back for Seconds Back on Track Bake into a Pie Balemurk Leech Bandit's Talent Bane-Marked Leonin Barbed Bloodletter Barbed Servitor Baron Helmut Zemo Baron Strucker, HYDRA Overlord Barrow Naughty Basilica Stalker Beamsaw Prospector Bebop, Warthog Warrior Beetle-Headed Merchants Behold the Sinister Six

Since Bruvac does not cause us to mill at the same rate as the rest of the table, suddenly we escalate our strategy, as every mana invested into X represents two cards for our opponents
The Scapeshift combo line has become a powerful alternate-win condition
Most card draw you want to keep for yourself, but if it's down to the last few cards in an opponent's library, targeting a player with Mathemagics to draw before their draw step can give them no choice other than to take the L