Bloom Tender

Vivid — {T}: For each color among permanents you control, add one mana of that color.

Raggadragga, Goreguts Boss

Each creature you control with a mana ability gets +2/+2.
Whenever a creature you control with a mana ability attacks, untap it.
Whenever you cast a spell, if at least seven mana was spent to cast it, untap target creature. It gets +7/+7 and gains trample until end of turn.

Sol Ring

Birds of Paradise

Arcane Signet

{T}: Add one mana of any color in your commander's color identity.