cards like exploration mtg (retro)- Artist Proof Age Group MtG Double Masters Rare Exploration

Paying 2 generic mana to draw one card isnt going to feel amazing, but things very quickly snowball from there

That depends on your wants, your wallet, and what you believe is good synergy with the theme you build toward

Additionally, you can run other prison effects like Sphere of Safety and Ghostly Prison and cards that reward you for gaining life like Vito, Thorn of the Dusk Rose

We also have several other cards that search your library for artifacts like Tribute Mage, Trinket Mage, and Spellseeker

Last are plenty of creatures that flicker or return other creatures to your hand when they enter the battlefield, which means you can chain some abilities and really get things moving