By the time youll have the mana to cast Yggdrasil and activate it, you should naturally have had some creatures hitting the graveyard from removal spells
Tribal was a work around
Also, it can easily sit in your lap when youre out grabbing lunch
They don't copy whether that creature was tapped or untapped, whether it had any counters on it, whether it had any Auras and/or Equipment attached to it, or any non-copy effects that changed its power, toughness, types, color, and so on
For one mana, Garenbrig Growth lets you return a creature or land from your graveyard back to your hand, helping to keep your hand full and bringing back any essential cards you might have lost
But Kothophed, Soul Hoarder has a cracked death trigger in a multiplayer game filled with Treasures