Amulets of Mara

Anytime the owner of Amulets of Mara says "Nord Style!", all creatures gain +3/+0 until end of turn.
All creatures you control also gain Haste, Trample
and +2/+2 until end of turn.
{t}All creatures with {b} mana cost on an opposing players field attack themselves.
All other mana types on the opponents field attack themselves for half damage.

"We gather here today under Mara's loving
gaze..."