mtg cards with suspend - Modern Horizons 2 #68 (English) it has haste.) Suspended Sentence
Description
Since this creature draws a card when it enters the battlefield, it can actually function as a sneaky outlet for infinite mana
Unless you want to make your opponents cringe upon your casting of this card, Thrill of Possibility, Bitter Reunion, Demand Answers, and many other MTG cards are direct upgrades to this 20-cent card
It's the perfect balance.
The most extreme example of this is the One of One Ring
Looking to Standard, this list covers several cards worth crafting or putting into a deck if obtained in a pack
Traveling Chocobo (Borderless Art, Pink Neon Ink) Mythic Rare, 511b Wait, another Chocobo
