There are even brand-new cards that have been created for the Jumpstart format, all of which are legal in other modes of play
I know Id enjoy the strategic complexity of playing Magic, but its just too big, too old, too intimidating
(2019-10-04) The card types that could appear among your permanents and cards in your graveyard are artifact, battle, creature, enchantment, instant, kindred, land, planeswalker, and sorcery
If an Adventure spell leaves the stack in any way other than resolving (most likely by being countered), that card won't be exiled and the spell's controller won't be able to cast it as a permanent later
If Alexios can't attack for any reason (such as being tapped), then it doesn't attack
I expect this card to do great in Standard, and in EDH its at least a creature tackled to a card draw spell