Mera

Lifelink, Last Strike, Can't be countered
{1}: Cycling
Mera cant leave the Battelfield, you can only have one Creature Called Mera. When Mera would leave the Battelfield remove all Counters from here. When Mera Attacks Sacrifice X Blood Tokens put X +1+1 Counters on Mera. Mera cant Block Creatures with Higher Power.