mtg the end card (Card) triggered ability The End - Wilds of

(7/23/2021) While playing Planechase, rolling the planar die will cause any ability that triggers whenever a player rolls one or more dice to trigger

Drown in Filth for a land-synergistic targeted removal that gets around indestructible

This is useful in a huge variety of situations, and while its not repeatable like others on the list, it is cheaper than some of the other choices

While you're going wide with artifact creatures Iron Spider, Stark Upgrade does a great job outfitting them for success

That effect helps aggressive decks churn through cards at a healthy rate, and it plays into the type of strategy Emberheart Challenger slots right into, with prowess decks often employing pump spells that target their own creatures