Dave's Doggo as depicted in the image
Dave's Doggo is a Buff Spell Card in Tower of Doom (TOD). Just like the Pink Hippo & Anorak's Wizard Cap, it is a spell card that buffs one stat on all of your Blooks by +2. This specific card buffs your Charisma attribute by +2, but "?" (Risks) are always bad, meaning that you will have to gain a VERY weak card or sacrifice a lot of health. Even if you have a Lucky Feather Card, it won't work, since this is a Legendary Card. This is however good for the last boss, since Evil King most of the cards have quite high Charisma.
Dave's Doggo does not stack.