Rowlund, Gnome Captain

Haste, Vigilance, Tunneling (Creature can declare an attack and tunnel past opponent creatures. Tunneling takes one combat phase, and then attacks go through on owner's next combat phase. Indicate this by using a tunneling token.)
All gnomes get +1/+1.
All gnomes with mounts have vigilance.
{2}{g}{g}: All gnomes gain tunneling.
{2}{r}{r}: Collapse Tunnels (Immediately after creatures that have tunneled do combat damage to an opponent, collapse your tunnels and destroy target opponent creatu