Blood Manipulation

{3}Tap attached creature, then add one counter to it

{3}Flowing Red Scale - Attached creature gets +1/+1
until end of turn
{6}Piercing Blood -Sacrifice 1 counter gained from Convergence. Deal 3 damage to target
{9}Supernova - Choose 1
•Deal 2 damage to all target player’s creatures
•Destroy target creature or artifact