This means if one player at your table is attacking another player, even if it isn't you, you'll still buff one of their attacking creatures by +X/+X
Losing 2 life isnt nothing, especially in formats that rely on shock lands, but you dont mind
Letting your opponents know what threats are coming can be dicey since they know what matters, but Ill give away some information for a full grip of cards
Commander Masters brings the first Masters packs specifically designed for Commander, Magics most popular format
Instead, both Gromp and Summoners Rift are subjects taken more from League of Legends as a game, with their cards even using existing key art from that instead
For top-end removal, you can replace Ruinous Ultimatum with sweepers like Cleansing Nova, Austere Command, or even Hour of Revelation