Blast Zone
Land
~this~ enters with a charge counter on it.
{T}: Add {C}.
{X}{X}, {T}: Put X charge counters on ~this~.
{3}, {T}, Sacrifice ~this~: Destroy each nonland permanent with mana value equal to the number of charge counters on ~this~.
Ventifact Bottle
{3}
Artifact
{X}{1}, {T}: Put X charge counters on ~this~. Activate only as a sorcery.
At the beginning of your first main phase, if ~this~ has a charge counter on it, tap it and remove all charge counters from it. Add {C} for each charge counter removed this way.