Its best to keep the mana up for this instant spell to protect yourself from massive damage from a burn spell or targeted removal aimed at one of your permanents
If you are new to the game and want to improve upon your deck without copying another deck exactly, its an acceptable thing to look at what cards are performing well and figuring out if there are ways you can make your list operate in a similar, streamlined manner
The legendary also sees play in Commander, Vintage, and Legacy formats
The three new starters from last year's Pokmon X and Y - Chespin, Fennekin, Froakie - are everywhere, while Black and White's trio of options - Snivy, Tepig and Oshawott - are also still well represented
March of the Machine also gave us the Multiverse Legends sheet, which contained xxx/500 versions of assorted legendary creatures in a frame that reflected their home plane