There is one method for players to maximize mana and HP. To do this, perform Power Treads switching between each attribute available. As an alternative to laying out your inventory, you can switch to Dexterity and then apply the regeneration feature, providing a much smaller pool of HP and mana.
An uncomplicated but useful feature! Inexperienced players are often lost when they are ganked by the crowd. And they forget that they have artifacts that can save lives. One of these artifacts is the Black King Bar, which gives immunity to magic. If you have the item and your opponent (enemy hero), is trying to kill you, just click BKB and teleport.
Playing as a 4th or 5th-position support hero, you will constantly be exchanging HP with enemies on the line. Very often you will have to run back to the base to recover resources. So, take the time to teleport back to your line. Train yourself to teleport into the mid, especially at the stage where your mid-hero has a bottle. This gives your mid-hero a very strong booster, for in essence - you give him 4 gulps from the bottle, save time behind the rune hike, and also allow him to be more aggressive with his swapping.
In a recent update, Valve made it so that you can't check Roshan by courier now. But we shouldn't forget about Gem. As you all know, when Gem is on the ground, it gives vision. And this trick works with Roshan. Considering that the courier himself, over time, gets invulnerable, this can be used coolly. For example, in the late game when Roshan can decide the outcome of the game. You launch the courier in invulnerability on Roshan, put the Gem out for a second, get the information you need, and then quickly pick up the Gem before the courier runs out of invulnerability, and just flies away.
Whatever percentages Valve puts on weird hero skills, "but random is still random" (a beautiful phrase for all gamers). But the most interesting thing is that this randomness can be abused to your advantage. For instance, take Faceless Void’s Time Lock. The chance of his bash, on the last level of pumping, is 24%. That's about one out of every 5 hits. But Dota 2 has a strange random system that goes something like this: the more you hit creeps, the more likely the next poke will be a bash. That said, not many people know that a canceled poke is counted by the game as a full-fledged strike. And it really can be used on the line.