And at its worst, Shredders Technique is extra redundancy for a black deck that otherwise couldnt hit enchantments
As previously mentioned, mono-blue and mono-red have virtually zero cards which gain life (in the case of red, actually zero)
Teferi, Mage of Zhalfir I like to think about Teferi, Mage of Zhalfir as Michael Jordan, as it can basically do everything despite being a simple creature
It's a small detail that reaffirms the events of the story and just how far Scar is willing to go to prevail over not just the cub but also your opponents and his

Number Five Bant Control | Reid Duke, SCG Invitational Los Angeles Creatures (8) 1 Restoration Angel 3 Augur of Bolas 4 Thragtusk Instants (15) 3 Azorius Charm 4 Dissipate 4 Sphinx's Revelation 4 Think Twice Sorceries (9) 1 Amass the Components 1 Terminus 3 Supreme Verdict 4 Farseek Enchantments (2) 1 Detention Sphere 1 Rest in Peace Lands (26) 2 Island 1 Alchemist's Refuge 2 Nephalia Drownyard 2 Overgrown Tomb 3 Temple Garden 4 Glacial Fortress 4 Hallowed Fountain 4 Hinterland Harbor 4 Sunpetal Grove Sideboard (15) 1 Jace, Memory Adept 2 Negate 2 Dispel 1 Silklash Spider 2 Rhox Faithmender 1 Pithing Needle 2 Terminus 1 Azorius Charm 1 Rest in Peace 1 Detention Sphere 1 Restoration Angel I don't even know what to say about Thragtusk, other than if you only looked up the Reid Duke decks with Thragtusk you'd have quite a buffet of different cool strategies