Sliver decks are based around each card granting incremental bonuses or individual keywords until you have an army of creatures with haste, +1/+1, vigilance, poisonous, trample, reach, and more
This is a body, a source of ramp and potentially some extra gas
Ive found that taking out energy acceleration early game and draw support late game, or when your opponent has a small hand, are the best times to do so
To be honest I was swinging between him and Stardust Dragon for him because both concepts suit Yami but I ended up with Black Winged Dragon because Yami throughout the series puts himself in harm's way for his friends
Youre allowed to have multiple versions of the same character in your deck, and those characters can co-exist on the game board
Not with Gandalf of the Secret Fire, however, who sends your cards away for three turns only to have them return to help you in the future