This is a wonderful way to out-draw your opponent and gain the curve advantage
For safekeeping MTG cards in mint condition, the toploaders are your best option
Most notably, Sisay's activated ability can be used if you pay one mana of each color, tutoring for a legendary permanent with a mana value less than Sisay's power, putting that card directly into play
Having Hexproof is nice and makes you feel safe, but I ran Aegis of the Gods in Azor for years and it almost never saved me from anything, not only because having hexproof isn't as strong as it seems but also because people will want to kill it very quickly if they do need to target you
It can boost you in mana by a substantial amount if you can cast another ramp spell using the Dynamo mana, and its better evaluated along the lines of the Expertise cycle, or as a ritual of sorts
Chulane, Teller of Tales is a flavor win and a win condition for your Adventures deck