You can find this card for less than a dollar at most locations
If you have ways to make non-legendary copies (which are pretty bountiful these days) then you should be able to take advantage of this even more
Although it is most common in green (as greens the anti-flying color), certain red and white creatures also have reach
If you have more Sahagins and Dragoons Wyverns, your deck will tend towards aggression, and with more removal and card draw, it will lean towards control
That flexibility has seen the spell turned to all sorts of uses, from its natural home in classic Legacy Reanimator to one of the great meta-breaking decks in UB Deaths Shadow
You have to do this as a sorcery Put the creature face down, and it obeys the morph rules 2/2, colorless If the creature is targeted, attacks, blocks, taps, or takes or assigns damage, flip it up