Copy pasta from my guide.
Battlefield of Eternity
If you ended up playing TLV on this map, it’s not the end. Even when this map can’t be played about macro because its size, you still can be useful for your team.
TLV should go off-lane, because they can’t do much in the early game on bottom, at least they can have enough space to deal with the enemy off-lanner and soak.
In this map you are going to race enemy Immortal as TLV, while your team defends yours. Of course, if you have someone better to race, like Valla, Greymane or Raynor (with PvE talent), you can help your team to defend Immortal, soak or def lanes.
Spin to Win won’t be so effective to race Immortal, so we are going to use “Baelog build” here. You don’t need to take Explosive Attacks on the 1 level for 100%, but Pain Don’t Hurt and Baelog the Fierce are must picks. By those talents, Baelog becomes sustained ranged damage dealer with fast auto-attacks. You should remember that Baelog loses his AA speed if one of TLV isn’t near or dead, so you should be careful and keep them alive for maximum value.
“I am sorry, but what can I do during early game as TLV on the off-lane?” Good question. Olaf soaks experience globes, Erik pokes enemy, Baelog tries too. But you can do more.
What? Send Baelog quietly to the top camp. But don’t go straight to it because your enemy off-lanner can see your move and later steal your camp. Or kill you. Or both.
Send Baelog to the road between keep and fort and go from there straight to the camp. While Baelog tries to take a camp, try to keep enemy busy by Olaf and Erik as long as possible before you get camp. You can use a fountain by damaging Olaf or Erik to heal Baelog too if he needs.
To take Shaman camp in early game you need help from your team. You can send Olaf to tank damage when one of your ranged assassins does his job.
Braxis
Basically, you use Olaf to tank point as long as he can and run away to regen hp by passive → repeat
Baelog clears minions, harass enemy.
Erik pokes enemy 24/7
At lvl 1 you go either armor vs slow AA heroes with big hit or Erik dmg.
Collect globes. Don’t let enemy to harass other 2 tlv.