Competitive players frown upon counterfeit cards, with a ban by WotC in place that can cause a player to be excluded from the competition, or worse still, all future official competitive play
(Serialized Edgar Markov cards are localized in English only and are available in Innistrad Remastered Collector Boosters of any language.)
The more you can fill your graveyard with various card types, either by naturally having your creatures die or by casting spells, or by self-milling, the faster you'll get to reap the rewards of your Delirium cards
You can even get your token generation by way of spellslinging, if that tickles your fancy
While in many other sets going the deck destruction route is a fringe option at best, its actually a real strategy here And one that actually fuels and empowers many other cards
Second, the whole catchphrase around the Angels is DONT BLINK