Bold Kataphractoi

As long as you control another white knight,
Bold Kataphractoi has +0/+1 and vigilance.
{3}{w}: Attacking or blocking white knights
you control have +1/+1 and gain vigilance
and lifelink until end of turn.
Sacrifice Bold Kataphractoi: regenerate
another target knight. It gains hexproof
and indestructible until end of turn.