Kamala, Theros Beast Slayer

Haste, Menace
Kamala attacks every turn, and when attacking, other creatures you control can't attack. When Kamala attacks, you choose which creatures block and how they block.
Whenever another creature you control attacks, you may sacrifice it and put two +1/+1 counters on Kamala instead.
"Share the effort? The blood will be on my hands and mine alone. Glory goes to the challenged."