mtg split cards rules second Split Second in MTG: Rules, History, and FAQs Split Decision · Game Night:

If you sink enough mana into its X cost, your opponents will either die or have no resources left to defend themselves, both on the battlefield and in their hand

Phyresis can be your win condition in a Ramses, Assassin Lord as long as you attach it to an assassin you control and attack with it

Just remember that it affects all players during the turn you cast it, so if youre leaning on an Urborg, Tomb of Yawgmoth, your opponents may be able to play some expensive instants during your turn as well

2 Vanquisher's Banner Raise Your Flag A fantastic little artifact that works both as a universal anthem effect for your favorite creature type while doubling as a powerful draw engine

It works pretty well if you cast a lot of - especially cheap - spells, so this is a shoein for the Spellslinger dragon configuration

The alternative is to craft the commander with a wildcard