I often call this staking a claim, taking cards that may not be amazing or super high priority in order to minimize the likelihood of other players at the table drafting your line
Since Tinybones has Deathtouch, thankfully dealing the required combat damage shouldnt be too difficult
Attacking as a 4/4 flier whenever you cast a noncreature spell complements a spellslinger plan quite well
You can find pretty much every effect on a legend, with cards like Ertai, Ressurected and Loran of the Third Path providing a huge amount of options, together with other legends-matter synergies like Reki, the History of Kamigawa
If youre looking to crush an opponent with card advantage, this is your answer
A little self-mill or an alternate use for cards like Entomb in your Ghen, Arcanum Weaver deck and you can really start doing some things