Perhaps some top contenders: Ack, I could keep going all day
Its fun because it feels like you get to tell a new story with the character, which is just a really fun part of the process
But in FF10 , even Sin itself is a summon specifically the previous Final Aeon created to defeat the previous Sin that eventually distorts into the next Sin
For just two mana you can make your permanents indestructible to save them from a board wipe, or you can give them double strike to take the win through combat
A deck that uses Pitiless Plunderer only needs to sacrifice a token creature or use one as a chump blocker, and thats just the first synergy that comes to mind
Arwen, Weaver of Hope Arwen, Weaver of Hope fulfills a crucial role in any +1/+1 counter deck