When building a deck, consider the font size and clarity of your proxies or custom cards
Boggart Cursecrafter Boltwave Booby Trap Boomerang, Blade Flinger Brallin, Skyshark Rider Brazen Cannonade Brazen Dwarf Breath of Malfegor Brimstone Trebuchet Brimstone Vandal Broodbirth Viper Bulwark Burning Cinder Fury of Crimson Chaos Fire Burning of Xinye Cabal Paladin Cartouche of Strength Catti-brie of Mithral Hall Cavalier of Flame Cavern-Hoard Dragon Cerebral Eruption Chainer's Torment Champion of the Path Chandra's Ignition Chandra, Awakened Inferno Chandra, Flame's Catalyst Chandra, Legacy of Fire Chandra, Pyrogenius Chandra, Roaring Flame Chandra, Torch of Defiance Chelonian Tackle Circle of Power Collective Defiance Colossus of the Blood Age Commodore Guff Conclave Evangelist
It is probably the best utility piece for the Final Fantasy XIII subset of cards
Watchwolf is a 3/3 so if the Intervention resolves, you put a +1/+1 counter on it and now its a 4/4
You may cast any number of legendary instants in a turn, and your deck may contain any number of legendary cards (but no more than four of any with the same name)