Digging for four cards instead of five, it will usually be worse than Grisly Salvage, but having more copies of the effect adds consistency
What sets squirrels apart and allows them to compete is that their two-drops and three-drops are very well-sized, with cards like Vinereap Mentor and Daggerfang Duo fully capable of tangling in combat while still providing sizeable chunks of value
At 2 mana, though, this thing rules
Modern-day iterations of these Dual Lands will have some type of drawback to using them, either by paying life for them to come into play untapped like the Shock lands, or more commonly, not having a basic land type associated with them
Then again, people didn't play with Juzam Djinn and Serendib Efreet for the same reason
10x Forests