Donating players commands

[Teot]

we used to have this on my old server to encourage ppl to donate. They are !commands.
We had a few of them but here is a sample of what we had
!resself
!buff
I think it would be nice to include those commands as a small thank you to donators. It had a limit cap depending how much you donate, for example you get 1 point for all the !commands for every 2$ donated. They only involve doing something to the player who donated and not party members or others.
Whatcha guys think?