Stack armour reduction to deal huge physical damage.
Pick heroes that have Global abilities.
Pick only heroes that are blue.
Pick heroes that can spawn things that require a number of clicks to destroy.
Pick heroes that have spells that affect enemy buildings.
Pick heroes that have a magnificent beard.
Rupture heroes, then deal massive damage by picking heroes that can force others to move while ruptured.
Pick heroes that are animals or can summon animals.
Pick heroes to buff up the Green Brewmaster Panda to shred buildings.
Deal ALL the magic damage by picking only heroes that can amplify magic damage.
Winning is easier when the enemy can't cast spells. Pick only heroes that can burn mana.
Pick heroes that benefit from taking damage.
Ever wondered what it'd be like to play Dota in a hall of mirrors? Try picking only heroes that can create illusions.
Pick heroes that have abilities that grant invisibility.
Pick heroes that have a sweet ride.
Pick heroes that have abilities that bounce.
Pick one essential hero to farm, then pick four other heroes to buff it up!
Pick only heroes that are red.
Heroes that can scale infinitely by acquiring a permanent buff.
Pick heroes that can double target their spells with Grimstroke ult.
Pick heroes that have wings.
Pick only heroes that can place something on the ground.
Pick only heroes that are green.
Pick heroes that benefit from night time.
Pick heroes that have no (visible) legs.
Choose heroes that can summon things.