A big red staple and playable in a few other archetypes too, all of which have ways to ramp up their own mana quickly
Did you know Totodile has never had a full art card, outside of Pokmon Pocket
Selesnya may have the late-game inevitability, but Rix Maadi Guildmage dominates the early game like nobodys business
Why tap them for mana when you can attack with them instead
To incentivize people to open more packs, MTG designers wrapped these cards up in a nice Limited format, so people could play Draft and Sealed, and eventually open valuable cards like the Power Nine or original Dual Lands
Whenever you roll C, create a 1/1 green Ooze creature token that comes into play with X +1/+1 counters on it, where X is equal to the highest power among creatures you control