What's in a Commander Legends Collector Booster
The Amber/Emerald aggro deck focuses on playing aggressive creatures while comboing with Tramp Street-Smart Dog to help fuel Chernabog Evildoer
They work to aid each other in challenging your opponents characters so they cant keep enough out to quest
Treasures are useful because they can accelerate your mana in a pinch, or you can use Magdas payoff effect to find expensive artifacts or Dragons to close the game with, opening up a cool token play pattern that is a breath of fresh air after years of Krenko and Purphoros, God of the Forge combo killing tables by generating a zillion goblins
Generally speaking, Magic designers arent going to put a marquee mechanic into the set if its not actively good, and [casthaven]Raise the Alarm[/casthaven] is pretty much the best, cheapest way to convoke ramp, if you will
You may play those cards until your next end step