Regarding the monsters of the series, there are plenty of cards with continuous effects
Its quite slow, though, since you wont get to exile the legendary creature until your end step, and you can only activate it as a sorcery, but Im excited to see what people do with this
The example above shows, clearly, how you can check if a card will be available in Standard after the rotation
We experimented with different amounts of playable cards per booster and found that 14 did the best job of giving us the play experience we wanted
At the beginning of each upkeep, a Time Counter is removed
Tidehollow Sculler A fine 2/2 body for 2 with both Mesmeric Fiend and potential artifact synergy bolted on