There really isn't anything like it: it costs , is an instant or sorcery, and replaces itself.
It's not good, but it might be similar enough to work.
May 31, 2019 11:28 p.m.
Manamorphose is one of a kind- there aren't any clean swaps for it. Its why an uncommon got valuable.
You are either picking a card advantage tool or a free spell, and you will want to adjust your list for it.
SSG, Wild Cantor doesn't trigger pheonix, etc. Mind Stone offers draw and ramp, but is enough slower that it really matters. Battle Hymn / Desperate Ritual can be fun to ramp hard, but is card disadvantage. Burning-Tree Emissary is a free creature, but its not the same.
If you are prepared to restructure a little more of the deck there are good options, but you are basically looking at Gut Shot / Mutagenic Growth , Rift Bolt (to get a suspended spell then two others) or just playing more burn cards.
June 1, 2019 4:34 a.m.
Magmatic Insight is a lovely card. You can't toss a phoenix with it, but people tend to miss the point that it's a draw 2 cards for 1 mana.
Lava Dart was spoiled for Modern Horizons. Casting two spells for 1 mana will probably be useful.
Staggershock is to be cast on your opponent's turn. The rebound allows it to be cast for free on your next turn. Free spells are always good.