What are the abilities of Littjara Mirrorlake?
user
Littjara Mirrorlake enters tapped.\n{T}: Add {U}.\n{2}{G}{G}{U}, {T}, Sacrifice Littjara Mirrorlake: Create a token that's a copy of target creature you control, except it enters with an additional +1/+1 counter on it. Activate only as a sorcery.
assistant