Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.) When this creature enters, you may pay any number of times. When you pay this cost one or more times, put that many +1/+1 counters on this creature, then up to that many target lands you control become 3/3 Wolf creatures with haste (This creature can attack, and as soon as it comes under your control.) that are still lands.