The phrase too-specific might sound like a backhanded insult, but putting down something early that synergizes with your gameplan and consistently refreshes your hand is going to provide you way more value over the course of the game than a simple mana rock ever will
If your opponents do manage to keep creatures up, Gruul War Chant gives all your creatures menace, which forces them to block inefficiently, while Berserkers' Onslaught grants double strike, which turns even a small army of 4/4s into devastating attackers
The recovery of it isnt too bad either, though I dont think youd have much trouble doing it later game when your Extra Deck is filled with more Pendulums
There are several options that provide you with value at any point of the game, before becoming a way to win
If the chosen creature is a token, Machine God's Effigy copies the original characteristics of that token as stated by the effect that created the token, plus the listed exceptions
Card Name Ancient Adamantoise Mana Cost Type Creature Turtle Rarity Mythic Rare rules Text Vigilance, ward Damage isn't removed from this creature during cleanup steps.All damage that would be dealt to you and other permanents you control is dealt to this creature instead.When this creature dies, exile it and create ten tapped Treasure tokens