A Dragon that gives Armor and Mr would be way more useful and not as game breaking as Infernal Drake
You are losing game, Your team is feeding, You have horrible team mates, How to win with feeding team mates? Make them feed less. How to do that? Give them armor and mr.
Example: Pancir Drake: Gives 10/20/30% armor and mr on stack.
Before you start but then tanks... "Nope! AD>Armor, AP/PEN>Mr
Don't question it. Just let it happen.