Absolute Virtue Aettir and Priwen Ancient Adamantoise Buster Sword Clive, Ifrit's Dominant Cloud, Midgar Mercenary Cloud, Planet's Champion Dark Confidant Emet-Selch, Unsundered Esper Terra Gogo, Master of Mimicry Hades, Sorcerer of Eld Ifrit, Warden of Inferno Kefka, Court Mage Kefka, Ruler of Ruin Lightning, Army of One Nibelheim Aflame Sephiroth, Fabled SOLDIER Sephiroth, One-Winged Angel Sephiroth, Planet's Heir Summon: Bahamut Summon: Knights of Round Terra, Magical Adept Traveling Chocobo Vivi Ornitier Y'shtola Rhul Yuna, Hope of Spira
In the early days of EDH, players that had to face down ProgenitusProgenitus found themselves beyond frustrated when they just had to take 10 damage every turn with no hope of blocking or using spot removal
If the target becomes illegal by the moment the trigger would resolve, it is countered and nothing happens either
Blech, Loafing Pest Blex, Vexing Pest / Search for Blex Gorma, the Gullet Beledros Witherbloom Valentin, Dean of the Vein / Lisette, Dean of the Root For my money, Blech, Loafing Pest is the best of the bunch since its lifegain trigger can turn into an overrun
