Please note that this is a layman's confirmation of the condition
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It revolves around control -- card advantage and tempo advantage -- and Serra Angel played the double duty of offense and defense each turn
You can play Giver of Runes in formats like Modern for a similar effect, but its not a human
Creature - Elemental Mutant Counters (CTRL to add secondary) Creature Danny Pink Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.) Creatures you control have "Whenever one or more counters are put on this creature for the first time each turn, draw a card." Creatures you control have "Whenever one or more counters are put on this creature for the first time each turn, draw a card." Legendary Creature - Human Soldier Advisor Pir, Imaginative Rascal Partner with Toothy, Imaginary Friend (When this creature enters, target player may put Toothy into their hand from their library, then shuffle.) If one or more counters would be put on a permanent your team controls, that many plus one of each of those kinds of counters are put on that permanent instead
