mtg cards with devour in Flames Oath of the Gatewatch 106/184 Regular Uncommon Art by Svetlin Velinov Magic: The Gathering Devouring Hellion

So the first thing I ask is whether a new card fits into that core identity

The storm mechanic copies a storm card for each time another card has been cast that turn

If Syr Vondam, Sunstar Exemplar leaves the battlefield at the same time as one or more other creatures you control die or are put into exile, its first triggered ability will trigger for each of those other creatures

There are also legends that dont directly call out X-spells but offer the kind of cost reduction that facilitates playing X-spells way more easily than normal

And as a neat bonus, there's an exclusive Magic: The Gathering card available for anyone who opts for a physical box over a digital copy

Lexivore, for example, is eating its own flavor text