mtg cards like solemnity Ask a Magic Judge — I have in play and cast Celestial Counters cant be put on artifacts MTGNexus - Solemnity

Power Nine Not all the Nine are present, but some very interesting pieces showed up nonetheless

Standard has plenty of all three of those at the moment, so Barricade is a solid answer to bring in from the board

And until Wizards either rolls back their odd changes or figures out a way to design for a 20-set Standard, it's hard to imagine how the format can really improve over the long haul

Simic Ascendancy is a cheeky card, providing a ticking time bomb of a win condition that can tick off twenty counters in no time with Zaxara on the battlefield

You can cast flash cards during your main phases , sure

It usually sees play in grindy WU midrange/flier decks