The Magic Arena (or MTGA) Leaderboard works a little different than the other ones. You enter by registering on arena.gentrymagic.com for free. Every week you will get an assigned opponent to play a match. All communication happens through the discord that is linked on that page as well. It is currently mainly in Dutch, but you should have no problems communicating in English.

PlayerIDTotal scoreNo. of eventsPoints
Draegy76276
Maned Wolf75275
Sythokhann73273
Eiloth72272
Captain+AF8-Mack72272
JelleL64264
Cyrex60260
Orexis57257
Thorifess57257
SultaiBrood53253
Quicksken52252
CrazySquirrel52252
TomDW52252
Abzanislife46146
S4ndero45245
Highelf44244
djason200144244
Bragala44144
nomit43243
Kalaxan43143
Flowwie39139
Nynnor37137
Critical35135
Tolchuck33133
Xunath31231
Craio31231
Scarity31131
Benja8330130
Franboos28128
ipkdmyself28128
tymeon26226
SkullClown26126
Kulderzipken25225
saaywhu25125
Adornas23123
Da+AF8-Great+AF8-MC21121
fredje21121
WeQuMTG18118
oopabakkus18118
That+AF8-Happy+AF8-Viking17117
Maniac16116