Promise of Bunrei
{2}{W}
Enchantment
When a creature you control dies, sacrifice ~this~. If you do, create four 1/1 colorless Spirit creature tokens.
The Very Soil Shall Shake
Ongoing Scheme
(An ongoing scheme remains face up until it's abandoned.)
Creatures you control get +2/+2 and have trample.
When a creature you control dies, abandon this scheme.