The biggest knock against the cards is how fragile the tokens they produce are
Whenever another Creature dies, or a Creature card is put into a graveyard from anywhere other than the battlefield, or a Creature card leaves your graveyard, Syr Konrad, the Grim deals 1 damage to each opponent. Basically, get some mill and discard in your deck and you can ping everyone to death
I'm really not sure what's going on here
Since indestructible doesn't prevent damage, an indestructible planeswalker will still have loyalty counters removed if it's hit with a burn spell, and that planeswalker will die if it hits 0 loyalty
For more information on where you can collect these new-to- Magic cards, check out this article
Its a perfect bridge piece for decks that want both mana and card advantage