black core mtg cards draw a card The Magical History of Spells Dread Presence Updated review of MythicBlackCore (MTGBlackCore)

When multiple of these effects are on the field, you can use the likes of Ghostly Flicker to blink both, return Flicker and an extra card to your hand, and repeat this sequence over and over again, which can be a pain to interact with if the second spell is a counterspell

It can win a prolonged game, but your entire plan is telegraphed and your opponent can adjust accordingly

It is a mercy we grant them

When you "flicker" a permanent, it's treated as a new card that just entered the battlefield

I don't usually like 3-cost mana rocks, however, it can untap a legendary creature and Shadowheart needs to tap to use its ability, so I will make an exception