the end mtg card Endbringer - Oath of Gatewatch and this turn and until end of turn effects end.) At the beginning of your next end step The End (Card) | EDHREC

You could do something as simple as adding an extra -1/-1 counter to an enemy creature, or you could really ruin someone's day by doling out poison counters at an alarming rate

Barrin, Tolarian Archmage While Mangara was looking to shake off the pillow fort descriptor, Barrin has built himself a bouncy castle. While Barrin and friends are certainly equipped to deal with opposing threats, the Archmage incentivizes us to prioritize bouncing our own threats instead

The Lord of the Rings- Tales of Middle-earth Legendary Land Size 8.8cm x 6.3cm, Fit perfectly into KMC perfect fit sleeve

Yes, mono-white can be good in Commander

This is because if you are given a choice and one of the options is impossible, you can't choose the impossible option

Its also a common card for Pauper purposes