If you time these correctly, you can get the most benefit from cards like Merlin Goat who grants one free Lore when entering play
I wanted to keep to the theme of Twilight's card, so buffing (mainly flying) equines is the goal
Hellbent That creature gets -13/-13 until end of turn instead if you have no cards in hand
Nightmare-Eyes Restrict Level 1 DARK Illusion Fusion Effect Monster ATK/ 0 DEF/ 0 2 monsters with different Types (Fiend, Illusion, Spellcaster) You can only use the (1)st effect of this cards name once per turn
it gains 1000 ATK and DEF until your next Standby Phase
I could also see it as being an easy gateway into, or back into, the card game, since the way Arena can communicate information at a glance makes it easy to learn about all the new mechanics that have been introduced in the last few expansions