Team Up is widely regarded as one of the most desirable sets due to its high-impact chase cards, notably the Pikachu & Zekrom GX tag-team
Garruk can come down on a static board and offer you less power than Jace but he can come down in a bad position and pull you much closer to even than Jace would do
Reptile/Effect LV2 ATK/300 DEF/800 FLIP: Place 1 A-Counter on 1 face-up monster on your opponent's side of the field
(I think if you do this with a double-striking Felix Five-Boots, the table will scoop before you can finish figuring out all of the triggers.) So between the cool triggers your Equipment can grant, the artifact synergies, and the innate beefiness provided, theres something for everyone
Activate Virtual World City - Kauwlon, then, when it resolves, activate Virtual World Gate - Chuche directly from your Deck
As you'd expect given the set's name, each one of the previewed SIRs was a mega evolution