Order of the White Shield (T1, S, Ext) Together with Order of Leitbur (which finished one place higher), these two pump Knights formed the backbone of the White Weenie deck for years
In Kaldheim, boasting is both common and encouraged
EDH Tribal Staples Creature (11) 1x Adaptive Automaton 1x Bloodline Shaman 1x Brass Herald 1x Caller of the Hunt 1x Elvish Soultiller 1x Metallic Mimic 1x Mirror Entity 1x Mistform Warchief 1x Riptide Chronologist 1x Riptide Shapeshifter 1x Tribal Forcemage Land (2) Enchantment (18) 1x Alpha Status 1x Call to the Kindred 1x Conspiracy 1x Cover of Darkness 1x Crown of Ascension 1x Crown of Awe 1x Crown of Fury 1x Crown of Suspicion 1x Crown of Vigor 1x Descendants' Path 1x Faces of the Past 1x Mana Echoes 1x Mirari's Wake 1x Reins of the Vinesteed 1x Steely Resolve 1x Xenograft Artifact (11) Instant (5) 1x Coordinated Barrage 1x Defensive Maneuvers 1x Luminescent Rain 1x Tribal Unity 1x Vigean Intuition Sorcery (5) Commander (1) Maybeboard Creature (6) 1x Bloodline Shaman 1x Chameleon Colossus 1x Mistform Wakecaster 1x Mistform Warchief 1x Riptide Shapeshifter 1x Taurean Mauler

Sure, the front side is a nonbo with Niv, but it's great with Yorion, Sky Nomad, which is often used as a companion, and Niv or Omnath can flip the battle in just one attack
One thing they did get me saying was I kind of wish Virus Beetle was legal in Standard. And here we go near instant turnaround on that wish
Retreat would be good enough if that was all it did, but its list of qualities just keeps on going