The flexibility of this ability triggering from non-creature spells means you could very easily run Saruman as an artifact or enchantment commander, opening up interesting deck-building options while keeping to the flavour of this key villain
Blade of the Bloodchief still works in +1/+1 counter decks, too
The tests included examining the cards under USB microscopes, examining the rosette dot print pattern, Spot-Fluorescent lighting testing, and an x-ray fluorescence scanner test
But in aggregate, high-damage-rate creatures like Jackal Pup and Goblin Guide will tend to speed up the format, which gives high-MV cards more risk in the metagame, which decreases the number of viable high-MV cards in that format, which increases power level
We liked giving white some defensive creature kill, but Exile had a few problems
However youve got yourself into a position where Ace looks like hes about to kick your butt, youd better find a way out of it