As long as youve attacked in a turn with them, you can pay two mana to fetch a card from your library and put it on top to draw the next turn
The additional booster pack ensures you have a few extra hands on deck to face any peril
Commons and uncommons are rarely going to break the bank, but when it comes to rares and mythics, these can sometimes start off way overpriced, and you risk spending $20-$50+ on a card that ends up selling for $2-3 after a few weeks
Morph isnt particularly strong and doesnt quest for much, but it's cheap, only costing two ink, and since it can come down early, you can set up some great shift plays just a few turns later
Topologics Topologics are links that activate their effect when one or more Monsters are Summoned by Special Summon in the zones which they point to, this way, the effects vary from destroying to banishing the cards on board
Based on the early chapters of the original Yu-Gi-Oh