Plus, the blink triggered ability happens anytime a bird enters, and that raises its potential considerably
The upcoming set will bring D&D's famous Forgotten Realms setting to the trading card game, replicating many of the items, locations, spells, and monsters of D&D, as well as many of the abilities you might be familiar with from your roleplaying sessions
To go back to Fenrir for a second, lets evaluate the card in terms of card economy: Fenrir replaces itself on ETB with a land, putting you at card parity
Having someone start with Leyline of Resonance on the battlefield probably means a shorter game
Because of this, and because of the general power creep of the game, Creatures these days have an awful lot going on