Minerva, Scholar of the Sky & Power Angel Valkyria: You can activate their effects off the activation of Counter Traps, or the negation of a Monster Effect/Spell/Trap activation, while protecting these monsters with Counter Traps you activate
Ulalek is very strong, and lets you double up on all your eldrazi for a low cost of two mana, while that trigger also doubles any other abilities and spells on the stack
Artifact Dagda is a special Link Monster, as when an effect of another card on the field is activated, you can quickly set 1 Artifact monster from your Deck to your Spell/Trap Zone as a Spell, but it is destroyed during the End Phase
Ahem This is the kind of nonsense damage dealer that infuriates a table in the best possible way
Ready for Ramp With the ability to play accelerators starting from turn one, Dinosaurs are built to ramp into their larger threats
Arceus: My favorite strategy in higher tiers is ekiller arceus, which I named Golden Wind after its shiny form