all cards in mtg arena Beginner's Guide to Playing on Magic I've seen one MTG Spiderman

That being said, here are some pretty good cards to look out for

Key Cards Empty the Warrens Grapeshot Peer Through Depths Reach Through Mists Petals of Insight Pyrite Spellbomb Aether Spellbomb Manamorphose Desperate Ritual Grinning Ignus Pyromancers Swath Goblins I have yet to see an effective Goblin deck

You have to cast Festival on an opponents upkeep, which immediately makes it harder to cast than Moment of Silence

Wizards states that the theme of exploration will return in the new Ixalan set, but doesn't specify if we'll see the Explore mechanic that characterised the first trip to Ixalan return as well

It becomes normal for players to end up discarding half or more of their spells to the power of this card