Community pack data from 5,000 packs puts the pull rate at 1 in 1,260 packs, meaning statistically you would need to open an enormous amount of product before expecting to find one naturally in a pack
If you are able to attack a battle (with Sieges, every player who is not the protector can do so, though this may differ with other battle subtypes), you can attack with your creatures , or use direct-damage spells that allow you to either target a battle specifically, or merely say any target
Rarity: Leader: 6 Common: 45 Uncommon: 30 Rare: 26 Super Rare: 10 Secret Rare: 2 Special Card: 6 Treasure Rare 1 DON
You can get that through a continuous stream of tokens like those from Jadar, Ghoulcaller of Nephalia, a recursive body like Nine-Lives Familiar, or a card thats easy to bring back like Bloodghast
The primary theme has 33 nonland cards really supporting it, with 19 that could make a final deck
With volume comes options