Buble the damp

{t}; add one {g}
{1} {g},{t}; Put 1 Bubble counter on a creature you control
{1}{g}{g},{t}; create two 1/1 green Axolotl creature tokens,
with one Bubble counter on each token.
{4}{g}, Sacrifice Buble the Damp; each creature
with a Bubble counter gains "{t}; add
one {g} and gain 1 life" until end of turn