You can spawn an Abbadon and use the wtf mode. This means his ultimate does not have a cooldown, which makes him nearly invincible. Except if you deal over 400 damage in one instance you are able to nuke him down to zero without bringing him under 400HPactivating his ult.
But this have a downside: his ultimate removes any negative buff. If you need a specific negative buff (ethereral blade, orchid, hex) for your combo, you have to stay with the tanky centaur.