While normally you calculate a spell's mana value by looking at its mana cost, Edge of Eternities adds an interesting wrinkle: warp
It phases in before its controller untaps during their next untap step.) Instant Instant (CTRL to add secondary) Land Land (CTRL to add secondary) Planeswalker Teferi, Master of Time You may activate loyalty abilities of Teferi on any player's turn any time you could cast an instant
Darkpact (Alpha, Beta, Unlimited, Revised) The classic ante switch
One of the newest cards on this list, Serra Paragon was introduced in Dominaria United, and is an interesting example of a common debate in Magics rules: should the rules be interpreted as-written, or as-intended
On December 16, presumably not long before the new Magic: The Gathering banlist update, a fan (who must surely be either kicking themself now or trying to cancel the sale) sold a near mint copy from the Scars of Mirrodin MTG set for $71