None of them have been amazing, but they let you trade 1-for-1 and you can do it at instant speed
Card Name Mana Cost Type Legendary Creature Avatar Wizard Rarity Mythic Rare rules Text FlashYou may cast legendary spells and artifact spells as though they had flash.If a legendary permanent or an artifact entering or leaving the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time
Moving on to Strixhaven (2021), we again find two also-rans and probably the most impactful cards with this mechanic at the time of writing in Card not found
The deck starts with a number of powerful and efficiently costed toxic creates with secondary abilities including Ria Ivor (battle cry, makes mites), Vivisection Evangelist (removal), Nimraiser Paladin (reanimate), Annex Sentry (removal), Porcelain Zealot (buff) and Blightbelly Rat (Proliferate)
When looking at all of the legendary cards, I wanted to avoid narrow legends
