Add 1 unstable card. Fix dice roll (was only returning '0-(n-1)')

Utils/mtg-cards-data.txt

@@ -32747,6 +32747,7 @@ Snickering Squirrel|Unstable|68|C|{B}|Creature - Squirrel Advisor|1|1|You may ta
 Split Screen|Unstable|158|R|{4}|Artifact|||When Split Screen enters the battlefield, shuffle your library and deal it into four libraries. If anything refers to your library, choose one of your libraries for it.$Play with your libraries' top cards revealed.$When Split Screen leaves the battlefield, shuffle your libraries together.|
 Spy Eye|Unstable|46|U|{2}{U}{U}|Creature - Eye Spy|1|3|Flying$Whenever Spy Eye deals combat damage to a player, you may draw a card from that player's library.|
 Squirrel-Powered Scheme|Unstable|70|U|{2}{B}|Enchantment|||Increase the result of each die you roll by 2.|
+Box of Freerange Goblins|Unstable|77|C|{4}{R}{R}|Sorcery |||Roll a six-sided die. Create a number of 1/1 red Goblin creature tokens equal to the result.|
 Staff of the Letter Magus|Unstable|159|U|{3}|Artifact|||As Staff of the Letter Magus enters the battlefield, choose a consonant other than N, R, S, or T.$Whenever a player casts a spell, you gain 1 life for each time the chosen letter appears in that spell's name.|
 Steamflogger Boss|Unstable|93|R|{3}{R}|Creature - Goblin Rigger|3|3|Other Riggers you control get +1/+0 and have haste.$If a Rigger you control would assemble a Contraption, it assembles two Contraptions instead.|
 Steamflogger Service Rep|Unstable|124|U|{2}{G}|Creature - Goblin Rigger|1|1|Whenever another Goblin enters the battlefield under your control, you may pay 1. If you do, Steamflogger Service Rep assembles a Contraption.|