Globe of Combustion

{t}, {x}{r}: Draw X cards, then explore X times.
{t}, {4}{r}: Up to 2 creatures you control each get
+2/+2 until the end of your next turn. Then one
of them competes against target creature you
don't control. (To compete, each competing
player gains life equal to their competing
creature's power plus its toughness. Then the
competing creature belonging to the
competing player with the least amount of life
is exiled.)