mtg split cards rules second Split Second in MTG: Rules, History, and FAQs Rules Text: split, second, Colors:

While the lack of a legendary creature status means the reprint of 2008's Bloom Tender can't be your next Elf commander, being able to tap for up to 5 mana depending on your deck's choice of colors is still an impressive feat for a 2-cost creature

The alternative is to craft the commander with a wildcard

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

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

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