Enter Hope Estheim, an Azorius MTG commander from the Final Fantasy Magic: The Gathering set
When tapped it adds one blue mana and places a time counter on itself
I can imagine the knobs on this card had to be adjusted quite a bit to keep it from being absolutely busted, and it ended up being mostly safe but also quite weak
You need to be careful with this one, because Krenko can have you draw your entire deck if you arent keeping track of how many cards are left
However, if a single creature you control with lifelink deals combat damage to multiple creatures, players, and/or planeswalkers at the same time (perhaps because it has trample or was blocked by more than one creature), the ability will trigger only once
This could stop her from seeing significant progress