If you are an aggressive and sneaky strategist, Emerald and Ruby is for you
Sapphire ensures youre never short on ink, powering up your bigger plays, while Steel provides tough characters and combat tricks to protect your side of the board
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The challenger +2 also allows him to pick off smaller characters in a challenge
More importantly, it has the ability Second Wind, which reads: Whenever an opposing character is damaged, ready this character. Most ready effects in Lorcana specifically state that a character who is readied cannot quest again for the rest of the turn, but a select few powerful characters can ready and quest multiple times in the same turn
Theres no I in team, but there is in Blitzball