mtg cards like reckless fireweaver Similar to (foil) Whenever an artifact enters the battlefield under your control Flamitecelão Temerário MTG - Kaladesh

The only thing that might trump one such card is a good tutor

Shardless Agent can easily cascade into these spells, leaving space for other spells at or above 3-mana to safely cascade past

How is this different from other Artifact type lines

Speaking of pillowforts, there is a downside to the pseudo-unblockable of shadow, which is that many of our creatures wont be able to block practically anything unless they lose shadow, so well use cards like No Mercy and Ghostly Prison (thats one way to think about Navidsons house, thats for sure) to dissuade opposing creatures from even wanting to venture into our confusing battlefield

Solemn Simulacrum makes a nice blocker as well, as when it dies you can draw a card