Again Mr. Fish running late...here we have yesterday's CotD Jirachi from CL, a rather interesting card. Statwise 60 HP is average for a Basic, x2 Weakness to
sychic: is bad, no Resistance is common, and :colorless: to Retreat is cheap. Stardust Song is decent for its Poke-Power, letting you flip 3 coins and letting you grab a
sychic: Energy out of your discard to be put onto Jirachi for each Heads when you play Jirachi onto your bench. Time Hallow then acts essentially as a mass devolutioner, letting you pick a number of your opponent's Stage 1 and Stage 2 Pokemon equal to the amount of Energy on Jirachi and putting them back into your opponent's hand, all for
sychic:. A well timed Jirachi can definitely cripple opposing decks, especially if you're running spread.
Modified - 6/10 (Useful for some decks, kinda bad for others)
Limited - 1/10 (I'd avoid using it here, Time Hallow won't likely be nearly as effective since you want their one copy of a Stage 1 or 2 to die and go to the discard instead of being recycled to their hand for potential reuse)
Unlimited - 1/10 (Better Trainer effects over Time Hallow)