The end step triggered ability won't trigger, and the cards won't be put into their owner's graveyard
Ashioks Adept If I were to redesign Ashiok's Adept, Id make it a 1/2 rather than a 1/3 and trim its mana value down to two
Also, please note that White has never been my favorite color
Legendary Creature - Wizard Merfolk Chasm Skulker Whenever you draw a card, put a +1/+1 counter on this creature
While Masters 25 specifically will probably sell either way thanks to the Jace, the Mind Sculptor unbanning, as Masters sets continue, we're likely to see more Mana Drain-like chase cards, which are expensive because they are extremely low in supply rather than high in demand
After all of the triggered abilities resolve, each of the three token copies of Securitron Squadron will have four +1/+1 counters on it