Beyond that triggered ability, Sixs main effect is likely giving all nonland permanent spells in your graveyard retrace, which allows you to replay them by simply discarding a land card from your hand in addition to paying their mana cost and any other costs associated with the card
With the one-of Opposition (in this list) and the one-of Turnabout, we have the potential for massive attacks
There are three cards that do this in concert: Ancestral Anger Blazing Crescendo (and of course) Reckless Impulse All three of these cards either draw a card or have some proxy for drawing a card attached to them
Also, it has storm, which means you get extra copies of it for each spell youve cast before it that turn
At a time where players were still happily paying five mana for 3/3 flying commons
and Again: a Magic Set Reviewers Tale My dear Bagginses and Boffins, Tooks and Brandybucks, Grubbs, Chubbs, Hornblowers, Bolgers, Bracegirdles and Proudfoots