The submission method depends on the value/rarity of the card, with those deemed very rare taken to an in-person office
If you already have a Skullclamp on the battlefield or in your hand, other good targets for these tutors would be your token generators or one of your sacrifice outlets
The Card List Alpha consisted of 403 non-promotional cards while Beta consists of 402
It spends the early game accruing mana, before throwing down knights like Vona, Eowyn and Cavalier of Dawn to head off emergent threats, before following up with equipment like Argentum Armor, Sunforger, and Heartseeker which with Equip Knight (0), is pretty dang good
Just dont plan on recurring it later
Still, this card is only worth 10 cents, making it one of the weakest bonus sheet cards to open