mtg double masters borderless cards Karn Liberated (Toppers) [Double Extended Art] Return up to one target land card from your graveyard to your hand.1 Spell Pierce (Borderless Alternate Art)

For example, Elspeth, Suns Champion could not be more of a staple in Standard, but at a mana cost of six, it will never see play in competitive eternal formats

Credit: Wizards of the Coast Death in Heaven BPhillipYork: This is potentially pretty funny way to generate a huge cyber army, so if you want lots of creatures, lots of mill and annoying exile, and have effects that care about attacking with lots of artifact creatures it's a solid card

Defense of the Heart's ability will check if an opponent controls three or more creatures as your upkeep begins

Finding useful cards with these alternate costs is pretty important to the format as well