Quote from SantiagoI am with the people that say this mechanic is somehow dull.
I. It's simple - even a complete beginner can understand it. Normal version or buffed version that can't block.
II. It's flavourful - all in this mechanic says Rakdos. Hit them hard and kill them fast.
III. It allows for choice - thus increasing the weight of tactical thinking during game. A R 1/1 unleash, in its simplicity, is much more tactical that a Goblin Guide.
I. As already said, it can only appear on creatures. This feels somewhat limiting.
II. Just like with hellbent, the advantage feels kind of low if compared to the disadvantage.
III. Seems hard to work with. Some creatures might have bonus effects if unleashed, but there's no marker between an unleashed creature and a creature with a +1/+1 counter on it. If synergistic cards work on creatures having counters... well, that feels more Simic than Rakdos.