Interesting, but the failures of UWx control on MTGO is a topic for another day and another article
Fortuantely, R&D has gotten much more creative with their wording so that there can still be effects like this without the mess of printing a keyword that doesn't actually do anything
If a Character is attacked and the attacker wins, the defending Character is trashed
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The thing with Monger is it is all a bit unnecessary, you can do a lot more than make a serious threat for five mana, even if the threat isn't quite as beastly you are also getting something else done
Bloomburrow is not a particularly strong constructed set and none of the mechanics offer a particularly good reason to maxamize them, so the set is left relying on stand alone cards