Subterranean Altisaur

Reach, trample
Convoke (Your creatures can help cast this spell.
Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
When Subterranean Altisaur dies, you can return
one target creature card from your graveyard to your
hand.

There is no possible reason for an altisaur to live in
caves. The altisaur, however, does not care for what
humans think is reasonable.