For many playtest cards, you'll need to make a generous assumption that basic game rules would be updated to allow them to work
Eventually we win the game off big beaters from Gimbal, Gremlin Prodigy or animate our tokens into beaters with Rise and Shine
Thats right
Fourth Place Esper Sentinel Sebastian Rosenauer Esper Sentinel was a little bit of a sleeper at the outset of Modern Horizons 2 but by December it was clear that this card would become a multi-format staple
There's also a reasonable number of "cast from your graveyard" mechanics at this point, including flashback, jump-start, and aftermath, so there are plenty of options available, although there aren't too many Commander staples that use a "cast from your graveyard" mechanic, so your power level might end up fairly low
Well, its hard for two-color cards to be high up on my list, as having two colors will naturally reduce the number of decks where its playable