Aurelia, the Warleader Extra combats arent quite extra turns, but aggressive decks can exploit them just as well
2 Non-foil rare or mythic rare Booster fun cards from among the following: A rare (6.4%) or mythic rare (4.6%) showcase draconic frame card A rare (51.5%) or mythic rare (8.2%) borderless clan card A rare (21.5%) from among the borderless Sagas, Sieges, and lands or a borderless mythic rare Elspeth, Storm Slayer (0.7%) A rare (6.4%) or mythic rare (0.7%) borderless reversible dragon 1 Traditional foil rare or mythic rare Booster fun card from among the following: A rare (5.3%) or mythic rare (3.9%) showcase draconic frame card A rare (42.7%) or mythic rare (6.8%) borderless clan card A rare (17.8%) from among the borderless Sagas, Sieges, and lands or a borderless mythic rare Elspeth, Storm Slayer (0.6%) A rare (5.3%) or mythic rare (0.6%) borderless reversible dragon A showcase ghostfire frame card: A traditional foil ghostfire card appears 9% of the time

These arent all necessarily the most powerful cards in terms of pure strength - though there are plenty of big numbers to keep your deck muscly if thats what youre after
Sub-grades make it clear on what is wrong with a card by breaking down the grading into four categories
The permanent clause is another possible knob to turn, definitely
Pippen makes food tokens for one mana while also providing an overrun effect for the mid to late game once you have a pile of food