[Kugyince]

I meant that since the Tinkmaster is 3/3 himself and if you get the 5/5 Devilsaur by spending 2 mana on an expendable then you effectively got a 3/3 and a 5/5 for 5 mana (3 for the Tinkmaster and 2 for the expendable).

Yeah the Rogue (Cleric and Warrior too) relies on a lot of specific combos which makes it powerful on constructed play like Ranked and Casual but hampers it in the Arena where you can't depend on decking specific cards.