Yes, the card could have been an instant, and it undoubtedly would have been better
Obviously it doesnt work quite well as a stand-alone card, but this Invocation becomes a value engine when you also have Enchantress's Presence or a similar enchantment in play
Legendary Creature - Vampire Warrior Kamber, the Plunderer Partner with Laurine, the Diversion (When this creature enters, target player may put Laurine into their hand from their library, then shuffle.) Lifelink Whenever a creature an opponent controls dies, you gain 1 life and create a Blood token
In addition to common keywords like destroy and exile, card abilities are structured in uniform ways
Plus, every time your dragons deal damage, you get to dig through your deck and even bounce dragons back to your hand to dodge removal or retrigger enter-the-battlefield effects
The Dimir and Boros colored starter decks from Final Fantasy keep the game moving with significant aggressive strategies