There are also paradox effects, or ones that care about casting spells from zones other than your hand
In a format where everything was speed, speed, speed, Capsize single-handedly allowed blue to stay in the game, and eventually lock it up by returning two lands a turn to a hapless opponent's hand
Over the holiday weekend at PAX West, the team from Wizards of the Coast formally unveiled Duskmourn, the next set of cards for Magic: The Gathering
Manifest dread is a new mechanic for this set, and to do it you look at the top two cards of your library, put one onto your field face down as a 2/2 manifested creature and the other card into your graveyard
That said, it helps you put stuff into the graveyard to reanimate, so that might be something you want
The reason I have picked out Rakdos Charm is that it does two niche things while still having some more general applications