Card not found couldnt target the opponent, but could let you get rid of some 1/1 you had (for whatever reason) and get two cards for your trouble
Avacyn sees play in formats like Pioneer, as a commander, or in the 99
Add the Eevee Bag Item card, maybe Dawn, and some healing to make the deck click better
Samis Curiosity is the kind of card which either makes your heart sing or your eyes glaze over but if youre in the second group then youll have to learn fast, because having reliable access to a Lander activation on turn two is absolutely foundational here
So lets take a look at all of the Magic: The Gathering booster pack types
While this differs from what people normally consider mana ramp, as your sources of increased mana arent permanent, mana acceleration often leads to much more explosive gameplay when used correctly