Both Tidus, Yuna's Guardian and Yuna, Grand Summoner play around with +1/+1 counters, but both are templated in a way that works with any kind of counter
Most instances of explore are found on creature cards, but MTG designers often find clever ways to get the most out of a mechanic, so youll see sorceries that let creatures explore, or vehicles that make the creature crewing them explore
Would you ever play this on the first turn
Notable Cards Veyran, Voice of Duality is regarded as one of the best Izzet commanders, and its powerful to build around it with lots of prowess and magecraft
Its also worth mentioning that one of the most popular casual cards in the set is Infernal Grasp, and we can bring up that math too: 2.5% to get a foil borderless, 5% to get a nonfoil
At the table, across from another player, the cards do their job