If a creature with flying would be destroyed, but an Aura with the umbra armor ability is destroyed instead, Whiptongue Hydra won't count that creature or that Aura as a "creature destroyed this way."
13-07-2018
wotc
A creature with indestructible or a creature that regenerates won't count as having been "destroyed this way."
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.