Basic cantrips like Consider and Thought Scour fill this role nicely, fueling your graveyard early in the game
This is a fairly deep archetype, with certain staxy cards like Meek Stone and Ensnaring Bridge narrowly missing the list--though if you're building a pillowfort deck, you should check them out
In that case, the ability will still resolve and you'll have the opportunity to collect evidence 9
If you really want to, you can discard two Pirate cards
Kros deals out shield counters (defense contractor), but there are other options
If Alisaie Leveilleur and Alphinaud Leveilleur are your commanders, your deck may contain cards with white and/or blue in their color identity, but not black, red, or green