just suddenly had a thought that there's space in white and secondarily in blue for a mechanic that keys off of

'At the beginning of your upkeep, if no creatures attacked you or a planeswalker you control since the end of your last turn, (do X)'

things as big as draw a card or as small as gain 1 life, creatures you control get +1/+0 until eot, put a flying,+1/+1,lifelink counter on this creature, make a treasure, search for basic land to hand, etc