This is your guide for getting SLPs from Arena Season 18.

MMR = Matchmaking Rating
SLP = Smooth Love Potion

Under 800 – 0 SLP
800 to 999 – 1 SLP
1000 to 1099 – 3 SLP
1100 to 1299 – 6 SLP
1300 to 1499 – 9 SLP
1500 to 1799 – 12 SLP
1800 and above – 15 SLP