Your two-for-one opportunities will in no way be limited to just what you read here
You have control over when to use the mana you generate, and you can instead opt for Food, which makes it way better as a late-game draw
Synonymous with control strategies, the blue and white color pairing of Azorius has long been a staple of nearly every format of Magic: The Gathering
Then, they stop being Goaded before you attack
Remember, these are extremely basic, non-competitive decks that are good for teaching people how to play or just playing kitchen table Magic with a friend, but they wont get you anywhere towards building a competitive Constructed deck or a viable Commander deck
A summon is a saga creature, so it works exactly like a saga: Once you reach the final chapter, and its triggered ability resolves, you have to sacrifice the saga