At Entrance; put a land you control owner's hand.
: gather , or .
and tap a creature you control: add or remove
an underground counter to or from that creaure.
Creatures with underground counters
can only block or be blocked by
other creatures with underground counters.
~ancient and forgotten dwell
so if a creature with a +1/+1 becomes a 3/3 when I biomass to 2?