When Adeline attacks, it creates a Human token tapped and attacking, applying tons of pressure to your opponent by allowing you to choose a new target for who the token will attack
Being restricted to green doesn't do any harm here, as simple ramp spells like Entish Restoration can generate you the resources you need to throw down game-winning permanents early on
For example, a given property may or may not have elves, and this type of worldbuilding impacts reprint selection
Effective energy management is crucial for maintaining momentum and exerting pressure on your opponent
If you're looking to build around legendary creatures, be sure to consider other powerful options like Primevals' Glorious RebirthPrimevals' Glorious Rebirth, Shanid, Sleepers' ScourgeShanid, Sleepers' Scourge, Urza's Ruinous BlastUrza's Ruinous Blast, and Ratadrabik of UrborgRatadrabik of Urborg
It gives you a constant source of tapping your opponent's creatures, which is free if you do it on your turn