Lumbering Crusher

Manaweb (Activated abilities of this creature cost {1} less to activate for each other creature with manaweb you control.)
{7}{r}{g}{g},{t}: You may sacrifice Lumbering Crusher, if you do, target creature gets +10/+10 and gains trample until end of turn. If you do not, target creature gets +3/+3 until end of turn.