Lev map pool

So lev picked Haven both times they played C9 and lost really bad, they won lotus just now which was c9's map pick. Ascent used to be their best map way back when and they've just been losing to eveyone on ascent nowadays. So, what map are they even good at ?

Pearl.
They are 6-0 on pearl, with a 66% atk round win-rate and a 54% defence round win-rate.
Pearl results in Americas League:
13-11 vs NRG
13-11 vs FURIA
13-4 vs Sentinels
13-4 vs MIBR
13-10 vs EG
20-18 vs FURIA

Lev just have a very small playbook by the look of it, they ran out of gas really quick, after their first few games, once teams anti-stratted them they got cooked