Is playing with a new deck and new cards against strangers actually fun
Don't underestimate the power of being the "nice guy" at the table: that usually translates into less life lost from being randomly attacked, less of your permanents being blown up by removal, and less of your spells being countered
Capable of being used at instant speed, Aetherflux Reservoir's controller can pay 50 life in order to deal 50 damage to the target player
Even with the finality counter to keep things in check, there are still plenty of shenanigans you can pull off here
If the top card of that library changes while you're casting a spell, playing a land, or activating an ability, you can't look at the new top card until you finish doing so
This is how The First Sliver is perfect for Sliver decks, as it uses cascade to get as many slivers out as possible as fast as you can