Just need to reprint Tectonic Edge or Ghost Quarter.
WW - Enchantment
When O-Decay enters the BF, exile another target nonland permanent with cmc 3 or less until O-Decay LtBF.
aggressive threat concealed as an answer
I mean, how many times in pioneer has Veil been cast to stop an actual threat instead of an answer?
I imagine you are probably right... but that ain't gonna stop players from despising combo and demanding it be categorically banned.
Opponents hate playing against combo, opponents hate playing against control, opponents hate playing against tempo... good thing God gave us midrange, amirite? Nobody could ever hate midrange...