mtg card price spikes Quietus Spike | Shards of Alara - Japanese Quietus Spike Price & Card

With lifelink, any damage your creature does gives you life

Later on, as the Oathkeeper may get less useful due to opponents having more mana, he can be traded in to resurrect a planeswalker to the battlefield

(Create an Incubator token with X +1/+1 counters on it and ": Transform this token." It transforms into a 0/0 Phyrexian artifact creature.) At the beginning of each end step, if a Phyrexian died under your control this turn, proliferate

It makes up for these restrictions by having larger creatures than all other colors, so its less of a drawback then it initially seems

On top of that, you can turn this into Enduring Scalelord or Worldgorger Dragon if you have the other pieces of the combo Alternative, an approach could be in a reanimation deck to fuel the graveyard, and you can get back Ancient Brass Dragon to (hopefully) bring it right back on the table (this not working with Teneb, the Harvester notably, due to the legend rule)