Promising Descendent

Flying
Raze (When this creature deals combat damage
to a player, destroy target land that player
controls. That player then puts a land token
onto the battlefield called Blighted Ruins under
their control. It has "({t}: add {b} or {r} to your
mana pool.)" )
Whenever you deal damage to a creature you
control, place a +1/+1 counter on another
creature you control.