Tromell would be great if he only had that activated ability, but he also makes your nontoken creatures enter with an extra counter
There is a chance that youll pull something really rare, but those chances are very low
You follow all normal timing rules for spells cast with the permission granted by Ral, Leyline Prodigy's last ability
There are plenty of ways to draw tons of cards and put tons of lands into play, especially with equipment like Shuko and Lightning Graves that dont cost any mana to equip
Although the card has been around for a while, it was only with the release of Modern Horizons 2 that the deck became competitive, as Fire // Ice and Shardless Agent were both big additions to the deck
There are some scary ones like Walking Ballista, tricky ones like Luminous Broodmoth and the one-sided board wipe Damning Verdict, and each cares about counters in a different way