Sources: Heritage Auctions, PSA Grading Scale
She's clearly based off Rhys the Redeemed, which is a superior version for a couple reasons: 1) he gives you access to White 2) elf is a more supported creature type 3) his second ability is far more potent in a Tokens deck
Table of Contents show What Are MDFCs in MTG
In the set itself, there are an absolute ton of legends, so playing from the set won't be an issue
Giving creatures the ability to attack or tap on the same turn they enter the battlefield under your control lets you quickly apply pressure to opponents through big stats, attack triggers, and powerful abilities the table would otherwise have a turn to respond to
When the cards were first being created, a printing error resulted in some cards being shadowless. This refers to the border around the illustration