To find the probability of drawing at least a certain number of successes the most common question in deck building one sums the probabilities for all values of k from the desired minimum up to the maximum possible
When Gruff Triplets enters the battlefield, so long as its not a token, you make two token copies of it
The other possibility is playing Invasion of Regatha in a dedicated burn deck since the backside seems pretty powerful with Play with Fire, Lightning Strike, and friends as a weird twist on Torbran, Thane of Red Fell, although I'm not sure a burn deck wants to use multiple burn spells or attacks to remove the five defense counters to defeat the battle
Additionally, if you have the city's blessing, you can pay five generic and tap it to draw a card
Group Hug The first lesson Twilight Sparkle had to learn was to work together with her friends
Unfinity 65 351 Animus of Night's Reach Enchantment Creature - Spirit (Color indicator: Animus of Night's Reach is black) Menace Whenever this creature attacks, it gets +X/+0 until end of turn, where X is the number of creature cards in defending player's graveyard