Ysylda, General Partner

{u}{g}: Another target creature becomes a Limited Partner in addition to its other types.
Put two -1/-1 counters on target Partner you control: Put a +1/+1 counter on target Partner.
Ysylda gets +0/+X where X is the total toughness among Limited Partners you control.
All damage that would be dealt to Limited Partners is dealt to Ysylda instead.