These knights include the cycle of elemental cavaliers from Core Set 2020 : Cavalier of Dawn, Cavalier of Gales, and Cavalier of Night
Just a couple dragons can win the game fast, and this is like Tooth and Nail entwined for Dragons
I then took that same deck and won the UK Legacy Nationals for that year, just as a quick side brag
Liliana Vess Liliana of the Dark Realms Liliana of the Veil Liliana, Death Mage Liliana, Death Wielder Liliana, Death's Majesty Liliana, Defiant Necromancer Liliana, Dreadhorde General Liliana, Untouched by Death Liliana, Waker of the Dead Liliana, the Last Hope Liliana, the Necromancer Professor Onyx
Protection Spells Flawless Maneuver is a no-brainer for us, especially with such a cheap commander
A creature with Protection from a quality, let's say a colour for simplicity, can't be targeted by spells and abilities of that colour (like Shroud, that's regardless of who controls them)