Keldwin Urbo, Fanatic

Succession V (If you cast this spell after a permanent with Succession IV entered the battlefield under your control, it gains access to its Succession ability.)
{w/u}{w/u}{b}, {t}: Draw a card. Then, add {w}{b}.
Succession - At the beginning of your draw step, Keldwin Urbo's Succession ability becomes a
copy of target creature's Succession ability until end of turn.