For example, superfriends decks get to activate their planeswalkers and bring them closer to ulting, a shrine deck gets those juicy upkeep triggers, and so on
What it offers is a way efficiently using what mana you do get, whether that be a two land screw or an eight land flood
Remember, the second spell doesnt have to be an instant, so you can first cast an instant with Chun-Li, then potentially cast a permanent and get a second copy of itand even a third if youve eventually completed a dungeon
This lets you sneak in some trickery by tapping it before your turn to keep you ahead
I did compare Archer to Cutthroat, and by extension, Blood ArtistBlood Artist, but it's important to note that you don't gain life when other creatures die
Charizard Flame : Focused on offense