Lia, Lady of Our Blood

Lia, Lady of Our Blood enters the battlefield with X +1/+1 counters, where X is the amount of life paid to cast Lia, Lady of Our Blood.
If you would pay commander tax for Lia, Lady of Our Blood you may instead pay 1 life for each {1}.
Lia, Lady of Our Blood can't attack unless you control another creature which caused you to lose life.