It's tips like these that are instrumental in helping new players understand how cards work and how to use them together
If you go walking through the tall grass, you're much more likely to encounter a modern card in PSA 10 than something even one decade old, let alone older
The lad is large
During either players' turn, when a monster would be summoned: You can send 2 "Valkyrie" cards to the grave from your hand or field
There are a few exceptions to this, like Eldrazi Repurposer, Glaring Fleshraker, Writhing Chrysalis (god, I hate this card in Limited), Spawn-Gang Commander, Emrakuls Messenger, and Drowner of Truth
(7/23/2021) An effect that says "choose a target, then roll a d20" or similar still uses the normal process of putting an ability on the stack and resolving it