They get to destroy the artifact or creature of their choice and any cards of yours that happen to match it, unless they have a reason to take a shot at your hand
The person who just struggled naturally putting Jund on board that hardcast a Charnelhoard Wurm , or the player that just cast Call the Coppercoats at instant speed before their turn and made 6 tokens, putting 6 more counters on their Champion of Lambholdt , triggering Sizzling Soloist 6 times
Version : 2.39.0 Minimum software requirements : iOS 7.1 or later
The first counter allows Urzas Saga to tap for colourless mana, the second adds an ability you can pay two for to put a 0/0 Construct into play that gets +1/+1 for each artifact you control, and the final ability lets you search your library for an artifact with a mana cost of 0 or 1 and then put it straight into play
The Imperial Bow stands out as an amazing item at only 2 cost and provides Challenger +2 and Evasive keywords
Instead, you can fully recreate Fang and Vanille's transformation thanks to one of my favorite Magic mechanics, Meld