+1: Look at the top three cards of your library. You may reveal a creature card and/or a land card from among them and put them into your hand. Put the rest on the bottom of your library in any order.
-1: Target creature gets +2/+2 until end of turn. You choose whether it's blocked this turn or not.
-6: Search your library for up to three creature cards and put them onto the battlefield. Then shuffle your library.
See Challenge # 129. I've decided for my entries to this challenge to allow the word "and" on type lines. French cards already do this on creatures: Sakura-Tribe Elder has type line "Créature : shamane et serpent".
Garruk (freed from the curse of the Chain Veil) and Kiora seem to have things in common to me. In particular: they love huge creatures.
The first ability is a typical card-selection probably-card-advantage ability for a planeswalker, as seen on Garruk, Caller of Beasts (creatures), Tezzeret, Agent of Bolas (artifact), Narset Transcendent (noncreature spells), and several others. It's annoyingly wordy but that's fairly inevitable. I allowed lands too (as on Gift of the Gargantuan) because Garruk Wildspeaker and Kiora, the Crashing Wave both like land cards.
I wanted to use the middle ability from Garruk, Primal Hunter as well, because it's nice, and it's mainly green but it's also got a bit of a blue feel to it. But that'd make the first two abilities are both variations on "draw a card", and all three abilities get things out of your library onto the battlefield.
So instead I came up with that weird middle ability. Something like Predatory Focus, something like Distortion Strike, something like Lure. (Also something like Master Warcraft unfortunately.)
Finally, the ultimate for these two really needs to be making huge creatures. I wasn't sure whether I should let that be your choice of huge creatures from your library, or just make a bunch of huge tokens. These guys have more normally made tokens, but they'd fight over what creature types the tokens should have, so this approach makes them both happy.
It's interesting to see G and U abilities be similar to a card RW card. It reminds of your Baleful Hawk.
I prefer the choice of searching out creatures and putting them onto the battlefield. I always felt actual creature cards felt like one was more skilled at summoning monsters than tokens (more likely to summon in mass rather than carefully selecting their creatures).