mtg cards that turn creatures into artifacts Do from trigger 'when creature enters the battlefield' effects? Are there any red/black spells

The Lorcana starter decks do this already (Amber & Amethyst, Emerald & Ruby, Sapphire & Steel), but players can and should experiment with other combinations

Also, since Magic cards use a blue tinted glue to affix the front and the back of the card together, there will be a faint blue hue to the card when your light is placed against it

Then you can +1 to draw and your foe too, and then you can -2 to make people just attack in one direction for a turn

As for the loop, it requires several pieces: Vampire Hexmage + Bloodline Necromancer + The Tomb of Aclazotz + a sacrifice outlet Start with Vampire Hexmage and Bloodline Necromancer in your graveyard and The Tomb of Aclazotz and your sacrifice outlet in play

Kamahl's Druidic Vow is in the same camp

Legacy players are probably well acquainted with threshold staple Cabal Ritual, and Putrid Imp is a commonly played discard outlet in reanimator and madness decks