When you attack with any creatures, a Cleric, Rogue, Warrior, or Wizard creature you control gains protection from creatures until end of turn, and it explores, either drawing you a land or giving it a +1/+1 counter
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This is no longer in place
Also, consider how MTG Menace interacts with other mechanics
As an example, if you have three 1/1 Green squirrels with 2 +1/+1 counters on them each, they are still base power 1 creatures
The next good thing is that it allows you to let creatures that don't have the ability to explore too
