Level Up Discussed at length in the Kargan Dragonlord section the only reason level up is better than kicker or evoke is that typically has a wider range allowing you to get going with just one or two mana and carry on being worthy investments all the way up to around ten mana
Maybe slap him with Voltron decks alongside commanders like Ardenn, Intrepid Archaeologist
Choco, Seeker of Paradise Barring a few exceptions like Kastral, the Windcrested, MTG hasnt got that many powerful bird commanders, let alone a 3-color one
These box sets are what I'd prioritize
You can drop Primeval Titan (outside of Commander) and ramp two lands or other six drop your deck is built around
Limited Formats in Lorcana: How to play Booster Draft and Sealed Deck Disney Lorcana has been out for about half a year now, and recent reprints have made the product more available to everyone