The World-Tree

During your upkeep roll two 6-sided dice.
Choose one die result and put that many white
and green Spirit creature tokens with "{1}: target
non-black creature gains ward {w}{g} until end of
turn" into play. These creature tokens have
power and toughness each equal to half of the
other die result, rounded up.
—
It appeared invisibly over the world to fertilize
creation.