Elanor, elemental summoner

{g/u}: create a 1/1 green and blue elemental creature token with haste
{2}{g/u}: create a 4/4 green and blue elemental creature token with haste and trample
{5}{g/u}: create a 8/8 green and blue elemental creature token with haste, trample, and "whenever another elemental creature enters the battlefield under your control put a +1/+1
counter on this creature."