You can use this choice as a bargaining chip with other players
My opponent has an Enchantresss Presence out and I use a Portent on him to try and slow him down, seeing two Sterling Groves and a Seal of Cleansing, so I ask him to shuffle
And EDH players do love their early mana rocks and Rhystic Study shenanigans, letting Dockside Extortionist spawn a metric ton of Treasure every time it drops
Promo Info BOOSTER BEGINNING OBSERVER [BT-16] CLOSECLOSE BT16-097 U Option Advent of the Ancient Steel Angel Color Black Yellow Form - Attribute - Type - DP - Cost 3 Digivolve Cost 1 - Digivolve Cost 2 - Upper Text [Main] You may play 1 [Ankylomon] or [Angemon] from your hand without paying the cost
It cant quite keep up in 60-card formats now that its out of Standard, but this works just fine in Commander, especially in storm decks
Its design is reminiscent of the catfish, a creature known for its adaptability and stealth in murky waters