For regular upgrades I highly recommend: Vito, Thorn of the Dusk Rose, Mondrak, Glory Dominus, Anointed Procession, Parallel Lives, Eerie Ultimatum, and you can also run the Cat Oven combo with Cauldron Familiar + Witch's Oven + Clock of Omens, and there's the Ballista Combo Heliod, Sun-Crowned + Walking Ballista, and finally the Exquisite Blood Combo since the deck already runs the other piece Sanguine Bond One Down, Three to Go
Marill (Illustration Rare) $22.58 Card Number: #204/193 Rarity: Illustration Rare Marill has been a fan favorite since the Johto era, and this card nails the nostalgia factor
Kaldheim seems packed with them after all, and the more compelling legendary creatures there are in Standard, the more appealing Kolvori becomes to build around
A while ago I wrote about how an average d20 roll with Ancient Copper Dragon in a Zirilan of the Claw deck can result in a one-turn kill, and thats just my weird junk combo
Azorius Control has been a strong option in Modern and Pioneer