The reason I like Eruth is that it plays so well with cast from exile payoffs like Passionate Archaeologist and Memory Worm
One of the things I like about Clamp is that it is actually quite hard to use properly, to know when to use it to dig, when to use it for protection and when not to use it at all
Putting this card into a deck filled with cards that specialise in providing lots of card draw - think of Maleficent, Mistress of All Evil, Shenzi, Hyena Pack Leader, Huey, Savvy Nephew and Lucky, The 15th Puppy - means potentially raking in tons of lore in a single turn, as long as youre able to draw them at the right time and keep them alive
If it gains double strike after other creatures have dealt first-strike damage, it wont deal first-strike damage
If those fail, there's always Syr Konrad the Grim
More importantly, Valgavoth, Harrower of Souls ability makes it so that anytime an opponent loses life for any reason, it gains a +1/+1 counter, and you get to draw a card