mtg trostani commander deck Trostani's Summoner Whenever another creature enters the battlefield under your control This is the core of

The plus is great if you want filtering or have creatures, the emblem gets you farther ahead, and the minus three works great with vigilance creatures, which you happen to have

This is supported by various mathematical research works, particularly one by mathematician Persi Diaconis

Below, lets look at my custom build for this deck and how it works

Artifact Artifact (CTRL to add secondary) Creature Braids, Arisen Nightmare At the beginning of your end step, you may sacrifice an artifact, creature, enchantment, land, or planeswalker

Deftblade Elite (3.981) Tribal: Soldier deck Provoke means: When this attacks, you may have target creature defending player controls untap and block it if able

Whether your matches are competitive or casual, it can be difficult to formulate which of these gemstone cards deserves a spot in your arsenal