Freerunning is an alternative cost, not an activated ability or anything, so you can cast creature spells for their freerunning cost with Caverns colored, uncounterable mana
In Frodo and Sams Commander deck, for instance, a common upgrade is that of the Nuka-Cola Vending Machine card from the Fallout cards for Magic
On Play, it can give 1 of your Leaders +2000 power until the start of your next turn, and you cant add Life cards to your hand (at least, not with your own effects) during the same turn
While it may be a little more useful in a multiplayer format like Commander, theres still a chance it ends up being an overpriced vanilla creature
Several other cards already provide similar effects in Token Triumph, but giving your creatures trample is vital for pushing through damage
Claim Jumper White catch-up cards rarely put you in first place, but cards like Claim Jumper can at least put you at parity with the ramp player