The Dragon creature type was launched with the classic Shivan Dragon, which set the mold for this expensive but powerful creature type
Although they might struggle at the highest cEDH levels, they dominate most high-power casual tables.
Gitaxian Probe + Mishra's Bauble Let's put it this way: A cantrip that you can pay for with life rather than mana, and tells you what your foe's up to, is so fundamentally broken that Gitaxian Probe is banned in Modern and Legacy, and it's also restricted in Vintage, where it's no stranger to top-tier decks
The freebie slot of Mishras Bauble makes Lurrus a little less intense on the mana side, as it lets you gain value immediately
You may target a permanent that is already tapped with Harrier Strix's second ability
But you need a little support to get this card onto the battlefield reliably and effectively