the card number can be found in the bottom left of each card, with the format being X/204 (X is the card number, from 1-204), then EN (the card language code, for English cards) and finally, the set number
It's super powerful in that sense
With the advent of Saga creatures, it's much easier to get into a situation where a Saga on the battlefield loses all of its abilities but is still a Saga enchantment
Really, though, its the unblockable ability which turns this from okay to wow, pretty neat
The triggered ability that lets its controller draw a card triggers when it dies for any reason, not just when you sacrifice it during the end step
Sword of the Animist, Sword of Feast and Famine, Sword of Light and Shadow, and any others in the venerable halls of swords would be a nightmare in the hands of Cloud