Its a strong threat to reanimate and you can have total awesomeness with two strong Saurons on board
The question I receive more than any other is just an extremely broad, How do I start building competitive decks? For me, deckbuilding is always an attempt to answer a specific question
Indoraptor is only playable in eternal formats like Vintage, Legacy, and Commander
Everything down to the creature types you see were approved by them
Long story short, Bristly Bill, Spine Sower basically sees play everywhere, and a lot of this play is relatively recent developments, causing a major demand spike for the Legend
Once you fill your Vault, you also get wildcards - 3 uncommon, 2 rare, and 1 mythic