Senu, Keen-Eyed Protector, is a decent evasive creature that falls short in Modern
If your deck plays all the most popular cards, then that deck will probably be expensive
When it enters the battlefield, each opponent will lose X life where X is your devotion to Black, and then you gain all of that life
Are color requirements realistic
Its basically a Gaeas Cradle for Dinosaur typal strategies, with the added ability of letting your dead Dinos escape from the graveyard, assuming you have ways to fill it up with extra cards
If you're worried about Boros struggling to draw cards, fret not: cards like Losheel, Clockwork Scholar and Tocasia's Welcome draw cards on both our turns and opponents, and then we've got mass draw heavy hitters like Neyali, Suns' Vanguard and Commander Liara Portyr to really pop off