I can do 4 TF2 keys if you're not able to sell it at 5.

Any of these
Anime Fight in the Arena of Death
Dead Bits
Fortified
Galactic Civilizations II: Ultimate Edition
Heckabomb
Killing Floor - Guest Pass
Minion Masters
Monsti
Smart Mummy
TRIO
for Overwatch Loot Boxes?

Something you like from here for Overwatch Loot Boxes?

2 csgo non-hydra keys for RiME?