This one is also pretty simple: once youve collected four copies of a common or uncommon card, each extra one that you get will go into the Vault
1 Collector Pack* for going 3-0, 3 play booster packs for 2-1, and 1 play booster pack for everyone else
Tellah, Great Sage is a little vulnerable to removal since its only a 3/3, but untap with this in a good spells deck and I cant imagine youd lose very often
Bundle Level up with 10 draft boosters, an oversized D20, 20 foil lands, an alt-art promo, and more
They are made for anyone starting out the game in the most basic way possible
Even aside from the more general application of the cards I mentioned today, theres a bunch of great cards for more particular archetypes available too