While it may be tempting as a new player to immediately spend a Dream Ticket on a cool looking UR card or carelessly pull packs from a box, the card(s) that you're getting may not actually have any use in either PVE (single player) or PVP (competitive play)
Whispers of the Muse (T1, Ext, S, Block) A favorite in "Turbo Xerox" (a blue deck which used minimal land but a ton of cantrips to thin out the deck), Counter-Phoenix (Shard Phoenix + Forbid) and Tradewind-Awakening (put Awakening on the stack, tap all your lands for mana, untap all your lands), Whispers has what might seem like a hefty price to pay for one card but you get to do it turn after turn after turn
3 Pokemon TCG: Black & White Series booster packs
Ulalek, Fused Atrocity asks that you hold out from playing your biggest eldrazi until you have an extra Sol Ring, two more Eldrazi Spawn, or Palladium Myr