For that deck to be most effective, youll want to have a pretty even distribution of both to get the most out of the deck, so its not a great choice for a dedicated Dog deck
In Commander, where decks run multiple colours in a 100-card deck, this Tribe Elder could be a lifesaver
There are 20 different cards featuring Teddiursa and Ursaring
BPhillipYork: I like the idea of Ulamog emerging out of Emrakul emerging out of Kozilek, all in the same turn
The standout here is Zoroak GX, whose Trade effect gives you a constant stream of card advantage
Ragavan, Dragons Rage Channeler, Unholy Heat, Expressive Iteration, this is just a real Izzet deck that just happens to have the combo slotted in