Theres also the typical chapter on creating adventures in the setting, as well as a chapter going over the treasures you can expect to find in a campaign set in the sprawling Ravnica cityscape
That means every big spell in your deck can potentially bring another spell along with it for free
Even just the ability to cycle it and fill up your graveyard could be valuable in certain decks as well, especially if you are working towards transforming a card like Search for Azcanta
Other good payoffs are spells with X in their mana cost like Crackle with Power, Mass Manipulation, and Animist's Awakening that benefit from pumping tons of mana into them
Both for playing Minsc and storming off after popping Boo like a piata, this deck is jammed full of both fast and slow mana sources
(At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) Whenever you win a coin flip, this creature deals 1 damage to any target