While some of these cards are decent at the local competitive level, they have not had much of a regional impact because they are frustratingly difficult to set up
A useful strategy is to sit down and map out all the possible decks you could face throughout a tournament run and memorize which cards to add and which to remove
It just happens to fit more casual EDH decks and limited/low-power Cubes
The easiest effect to get is card draw, either through creatures that natively draw cards when they deal combat damage, like Thieving Otter, or cards that give that effect to the team, like Bident of Thassa or Enduring Curiosity
The star is Fire King High Avatar Garunix , which revives itself each turn and wipes out all other monsters
Black Feather Whirlwind X SPELL Continuous Once per turn, if you Special Summon a DARK Synchro Monster from the Extra Deck (except during the Damage Step): You can target 1 of your "Blackwing" monsters, or "Black-Winged Dragon", that is banished or in your GY, with less ATK than that Special Summoned monster