Offering devastating combos with a variety of cards in multiple different formats, Vivi Ornitier is a true soon-to-be staple threat
I am not simply talking about additional cost, or else then something like Magic Mirror would fall into the Passive category
Kianne, Corrupted Memory I love casting sorcery speed spells at instant speed and I always try to include ways to do it in my decks when I can
Lightning Bolt and Damn are classic cards that see a lot of play in all kinds of formats, while Prismatic Ending is a staple in WUBRG and domain decks that have access to lots of different colours of mana
So, if you have a card like Tezzeret, Master of the Bridge, which grants some of your spells affinity for artifacts, and you cast a Myr Enforcer, then every artifact you control will reduce the spells cost by
Best Cards + Mulligan Strategy The basic mulligan strategy is to get cards you can play on turns 1, 2, and 3, make sure you dont have too many uninkables, have at least one card that can draw, and put back high-cost cards