Explorer Elves

Made it to Mythic, and am currently at 1800 (been higher briefly) with this list:

Deck
4 Elvish Mystic (M14) 169
4 Llanowar Elves (DAR) 168
2 Dwynen's Elite (JMP) 389
4 Elvish Clancaller (M19) 179
4 Elvish Visionary (ORI) 175
4 Elvish Warmaster (KHM) 167
2 Marwyn, the Nurturer (DAR) 172
1 Lair of the Hydra (AFR) 259
4 Collected Company (AKR) 186
2 Boseiju, Who Endures (NEO) 266
4 Leaf-Crowned Visionary (DMU) 167
19 Snow-Covered Forest (KHM) 285
3 Defiler of Vigor (DMU) 160
2 Growing Rites of Itlimoc (XLN) 191
1 Realmwalker (KHM) 188

BO1 obviously.
I'd like to fit in another Realmwalker, but 1 might actually be correct.

Play recommendations - Always take the route that generates card advantage, unless it's a straight up race (like against Greasefang).
Turn 1 mana elf into Turn 2 Marwyn is incredibly strong

Only made it to diamond 2 this season. Put in 2 Unlicensed Hearse and improved against Greasefang and Jund Sacrifice, but gave up some edge against the field. This was my list before switching:

Deck
4 Elvish Mystic (M14) 169
4 Llanowar Elves (DAR) 168
3 Jaspera Sentinel (KHM) 178
4 Elvish Clancaller (M19) 179
4 Elvish Visionary (ORI) 175
4 Elvish Warmaster (KHM) 167
2 Marwyn, the Nurturer (DAR) 172
1 Lair of the Hydra (AFR) 259
4 Collected Company (AKR) 186
2 Boseiju, Who Endures (NEO) 266
4 Leaf-Crowned Visionary (DMU) 167
3 Defiler of Vigor (DMU) 160
1 Growing Rites of Itlimoc (XLN) 191
2 Realmwalker (KHM) 188
18 Snow-Covered Forest (KHM) 285

I see similar lists but with the 5/4 beater and the 2/1 mana dork for :g::g::g:. I wonder how they fare against Greasefang and Sacrifice. I'd imagine poorly as well, although the beater might provide some relief against Sacrifice