It includes: Olorins Searing Light, Sorcerous Squall, Rammas Echor, Ancient Shield, Courageous Resolve, Gandalf of the Secret Fire, and Fell Beasts Shriek
Chapter I is simply a body to potentially fuel Chapter II, though a player might sacrifice a Rat or other tiny creature to tutor for a game-ending threat, which is the optimal move
Affectionate Indrik Arena Atzocan Archer Blizzard Brawl Cartouche of Strength Cherished Hatchling Curse of the Werefox Duel for Dominance Earth Rumble Fight with Fire Foe-Razer Regent Food Fight Frontier Siege Grothama, All-Devouring Guild Feud Hog-Monkey Rampage Joust Kels, Fight Fixer Kiora, Master of the Depths Kraul Harpooner Longstalk Brawl Magus of the Arena Malamet Battle Glyph Nessian Wilds Ravager Neyith of the Dire Hunt Prepare // Fight Prepare // Fight Rivals' Duel School Daze Skophos Maze-Warden Skyshroud Ambush Somberwald Stag Summon: Magus Sisters Tail Swipe Temur War Shaman Tunnel of Love Tunnel of Love Ulrich, Uncontested Alpha Unnatural Aggression You Come to a River You're Ambushed on the Road
If your commander has a converted mana cost of three, casting it a second time will cost a total of five mana, and then seven, and so on