Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.), myriad (Whenever it attacks, for each opponent other than defending player, you may create a token that's a copy of that creature tapped and attacking that player or a planeswalker he or she controls. Exile the tokens at end of combat.)
As long as Elturel Survivors is attacking, it gets +X/+0, where X is the number of lands defending player controls.