Agatha of the Vile Cauldron

Activated abilities of creatures you control cost
{x} less to activate, where {x} is Agatha of the
Vile Cauldron’s power. This effect can't
reduce the mana in that cost to less than one
mana.

{4}{r}{g}: Other creatures you control get +1/+1
and gain trample and haste until end of turn.